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Best Handheld GPS

last updated Feb 28, 2019

In a do or die situation, a GPS can be a lifesaver. In less serious occasions, it can simply be a nifty tool that can save you from becoming lost. But, much like other technology in the world, most GPSs offer much more than just the basics. Besides giving and receiving directions, you will find that they can work as multipurpose devices. Specifically, this list will focus on the models that you can easily hold in the palm of your hand and take with you anywhere.

In a Hurry? The test winner after 16 hrs of research

icon
DELORME INREACH SE
97.3/100 our score
Use
98
Battery Life
98
Visibility
95
Connectivity
98
DELORME INREACH SE
Why is it better?

100 percent global coverage

Amazing battery life

In a Hurry? Editors choice:
DELORME INREACH SE
Test Winner: DELORME INREACH SE
Researched Sources
15
Researched Sources
Reviews Considered
15k
Reviews Considered
Hours Researching
16
Hours Researching
Products Evaluated
14
Products Evaluated
Last Updated:
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By Jordan Coleiro:

This list of Handheld GPS Units has been put together to show you the best researched and reviewed GPS Units to allow you to travel through the backcountry without losing your way. A Handheld GPS to keep your eye on is the Delorme Inreach SE. We love this addition because it is highly rated, provides global coverage, has a battery life of up to 100 hours, and has a great display.

Sorting Options
Use Battery Life Visibility Connectivity By Default
Rank
PictureProduct
Name
Rating
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#1
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
97.3
Use
98%
Battery Life
98%
Visibility
95%
Connectivity
98%
Price Comparison Last Updated (20.04.19)
$449.94
#2
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
96
Use
98%
Battery Life
98%
Visibility
94%
Connectivity
94%
Price Comparison Last Updated (20.04.19)
$109.99
See Deal
$284.95
#3
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
93
Use
95%
Battery Life
89%
Visibility
98%
Connectivity
90%
Price Comparison Last Updated (20.04.19)
$126.00
#4
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
91.5
Use
98%
Battery Life
84%
Visibility
99%
Connectivity
85%
Price Comparison Last Updated (20.04.19)
#5
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
91
Use
98%
Battery Life
83%
Visibility
98%
Connectivity
85%
Price Comparison Last Updated (20.04.19)
$499.95
#6
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88
Use
90%
Battery Life
83%
Visibility
83%
Connectivity
96%
Price Comparison Last Updated (20.04.19)
$81.99
#7
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86.8
Use
83%
Battery Life
91%
Visibility
84%
Connectivity
89%
Price Comparison Last Updated (20.04.19)
$143.93
#8
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86.5
Use
89%
Battery Life
88%
Visibility
85%
Connectivity
84%
Price Comparison Last Updated (20.04.19)
$213.99
$249.99
See Deal
#9
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
85.8
Use
86%
Battery Life
88%
Visibility
86%
Connectivity
83%
Price Comparison Last Updated (20.04.19)
$149.00
#10
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
84.3
Use
84%
Battery Life
88%
Visibility
83%
Connectivity
82%
Price Comparison Last Updated (20.04.19)
$374.00
In Depth Review Top 10
  • DELORME INREACH SE
  • DeLorme AG InReach Explorer & Satellite Communicator
  • Garmin eTrex 30x
  • GARMIN OREGON 650T GPS
  • Garmin Montana 680t
  • DUAL ELECTRONICS BLUETOOTH GPS RECEIVER
  • BAD ELF 2200 GPS PRO
  • STANDARD HORIZON HX870 WITH INTERNAL GPS
  • GARMIN FORETREX 401 GPS
  • YAESU HANDHELD VHF/GPS
Table of contents
  • Criteria Used for Evaluation
  • Other Factors to Consider
  • Frequently Asked Questions
  • Sources

Top Ten Handheld GPS Units

1. DELORME INREACH SE

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
97.3
DELORME INREACH SE
Use
98
Battery Life
98
Visibility
95
Connectivity
98
best offer for today
$449.94
Pros:

100 percent global coverage

Amazing battery life

Cons:

Will not function in any way without a subscription

The DeLorme inReach SE will definitely adapt to a wider amount of people and works very strongly as a GPS.

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Software

With this satellite tracker, you can send and receive 160-character text messages with GPS coordinates. Tracking intervals from 10 minutes to four hours provide you access for tracking your trip.

The Battery

A brilliant built-in rechargeable Lithium-ion battery can last for days.

Display

For the most part, while not amazing, the LCD display is adequate enough to read.

Wireless/Bluetooth Functionality

Through Bluetooth, you can track and navigate using free maps and charts that come equipped with your exact coordinates.

Additional Functionalities

In the case of an emergency, you can have a two-way conversation with GEOS, which is a search and rescue monitor center.

Overall

This truly is a terrific model and its requirement for an active subscription is one of the few downsides that keep it from going any higher.

2. DeLorme AG InReach Explorer & Satellite Communicator

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
96
DeLorme AG InReach Explorer & Satellite Communicator
Use
98
Battery Life
98
Visibility
94
Connectivity
94
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$284.95
$109.99
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Pros:

Messaging capable

People have used this in no-call service areas

Cons:

Some had trouble with messaging

The DeLorme AG In Reach Explorer and Satellite Communicator has quite the long name and for good reason. This handheld GPS will do a lot for you.

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This is quite a unique device, because not only do use it for GPS tracking purposes, but it's possible to send and receive text messages on this as well. So you are able to plan, track, and share your journey. This is a great feature for any situation that may be an emergency. You can message with the company's 24/7 rescue monitor center.

Along with the messaging, you are able to track your route, drop waypoints, and navigate. You are also able to view route distances, and it is equipped with a digital compass as well.

And for extra Scout's points, plan your trip's routes online ahead of time and even share it with family and friends to watch your journey outdoors.

3. Garmin eTrex 30x

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
93
Garmin eTrex 30x
Use
95
Battery Life
89
Visibility
98
Connectivity
90
best offer for today
$126.00
Pros:

Upgraded display

3.7 GB of storage

Built-in sensors

Cons:

Preloaded maps aren't great

This is an updated version of Garmin's eTrex, and it boasts a brand new color display and is waterproof. Let's find out some more details on what makes the Garmin eTrex part of our top ten.

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This GPS comes with a 2.2" color display, which may seem small, but is highly accurate. Testers liked that it was a good balance between power efficiency and fantastic visibility.

According to those who have used this device and love it, one main gripe was that the pre-loaded maps were not that great, so opted to add their own.

To take full advantage of the smaller screen, TOPO 24k maps are great high definition topographic maps that many hikers tend to use.

And of course, in our modern age, this device is wirelessly compatible with other's devices to share tracks and routes. If you come across a special spot and meet other hikers on the way, you can simply direct them to the spot by sharing it through your eTrex 30.

4. GARMIN OREGON 650T GPS

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
91.5
GARMIN OREGON 650T GPS
Use
98
Battery Life
84
Visibility
99
Connectivity
85
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Pros:

Terrific display provides enhanced clarity

3-axis electronic compass and barometric altimeter

Cons:

The included directions are practically useless

Back to Garmin again, this time with their Oregon 650T GPS. In some ways, it is just as efficient as superior models.

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Software

Much like the Garmin models that have preceded it, the Oregon comes equipped with a high-sensitivity GPS receiver with HotFix for great performance.

The Battery

There is no battery pack available, just AA batteries. It works best with lithium batteries but can last around 10 hours.

Display

A huge 3”, readable, color, and touchscreen display enhances clarity.

Wireless/Bluetooth Functionality

Between multiple units, you can share routes, waypoints, and geocaches.

Additional Functionalities

With the microSD card slot, you can insert a MapSource card with detailed street maps. When doing so, you will be provided with turn-by-turn directions to your intended destination.

Overall

Anytime you choose a Garmin GPS you can expect quality and the Oregon is certainly no exception.

5. Garmin Montana 680t

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
91
Garmin Montana 680t
Use
98
Battery Life
83
Visibility
98
Connectivity
85
best offer for today
$499.95
Pros:

Acquires satellites quite quickly compared to others

Screen is generous 

Cons:

Screen can be difficult to see in direct sunlight

The Garmin Montana features a glove-friendly touchscreen that is both color and dual orientated. And what sets this one apart, is that it includes an 8 Megapixel camera. Let's find out some more details about this rugged GPS.

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The Garmin Montana is a fantastic addition to your outdoor adventures. It comes pre-loaded with TOPO U.S. maps, and for one year, a Bird'sEye Satellite addition is included as a bonus.

It features a color four-inch-dual-orientated touchscreen that is also glove-friendly, which is great in the colder months.

The Montana tracks both GPS and GLONASS Satellites to keep you firmly on the right path.

With this handheld GPS, you also get a TrackManager, which will help you to organize and navigate through different tracks and routes.

6. DUAL ELECTRONICS BLUETOOTH GPS RECEIVER

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88
DUAL ELECTRONICS BLUETOOTH GPS RECEIVER
Use
90
Battery Life
83
Visibility
83
Connectivity
96
best offer for today
$81.99
Pros:

Comes with a USB charging cord, car charger and non-slip pad if you choose to stick it to surfaces

Included one-year warranty

Cons:

When turned off, it has a slight power drain

While this is a terrific GPS, for optimal results you will need another device alongside with it. If you have one that features Bluetooth, this will not be an issue.

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Software

For reliable GPS coordinates, there is an implemented Wide Area Augmentation System.

The Battery

The battery will last around 8.5 hours, but an included USB charging cord will charge it back up.

Display

There is no LCD display present and your other device provides that for you.

Wireless/Bluetooth Functionality

In a matter of seconds, this GPS receiver will connect to any devices that have Bluetooth enabled.

Additional Functionalities

Past general GPS functionality, you can choose to track your fitness and even find restaurants and stores near your area.

Overall

The fact that this is not a standalone GPS could alter its rank for you, but if you have a smartphone or tablet you will be happy to utilize its capabilities.

7. BAD ELF 2200 GPS PRO

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86.8
BAD ELF 2200 GPS PRO
Use
83
Battery Life
91
Visibility
84
Connectivity
89
best offer for today
$143.93
Pros:

Easily fits snugly in the palm of your hand

Up to five people can connect simultaneously to the GPS Pro via Bluetooth

Cons:

The USB cover does not fit tightly and it sometimes opens unexpectedly

The Bad Elf 2200 GPS Pro is the perfect example of a GPS that works more like a multifunctional device. As a handheld, it is the best of its kind.

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Software

A standalone GPS data logger will store over 100 hours of tracking data and can log at one-second intervals.

The Battery

If you are just logging data, this can last up to 35 hours. But, if you are using other functionalities then it may be reduced to 16-20 hours.

Display

A large LCD, backlight screen provides an easy way to see the display (even at night).

Wireless/Bluetooth Functionality

With Bluetooth functionality, you can connect up to five devices at a time. It is also compatible with the iPad, iPad mini and iPhone 5.

Additional Functionalities

If you download the Bad Elf Utility App, which is free, you can transfer your data from the GPS Pro to any handheld device of your choosing.

Overall

As a GPS, it is fantastic with over 100 hours of tracking data and a very good battery life. But, the Bluetooth capability puts it over the top.

8. STANDARD HORIZON HX870 WITH INTERNAL GPS

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86.5
STANDARD HORIZON HX870 WITH INTERNAL GPS
Use
89
Battery Life
88
Visibility
85
Connectivity
84
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$213.99
$249.99
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Pros:

Backed by a 3-year waterproof warranty

An integrated 66 channel GPS receiver

Cons:

The white LED light can be hard to see with the sun out, or with excess light

The Standard Horizon HX870 is much more than a GPS and can even come in handy during life-threatening situations.

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Software

A 66-channel WAAS GPS receiver offers a wide range of locations.

The Battery

It comes equipped with a long-lasting 1800 mAh Li-ion battery and an Alkaline battery tray.

Display

The display can be both great and a hindrance, as it is oversized and provides a full dot matrix display. But, the white LED display, when on, can make it hard to see during peak brightness.

Wireless/Bluetooth Functionality

This features the ability to continuously track and display position information of up to nine pre-selected vessels.

Additional Functionalities

If needed, the receiver allows the radio to transmit a DSC distress call. Also, it has a noise-canceling function when you are transmitting audio.

Overall

Besides the display, which can be a slight issue from time to time, there is nothing but pure quality here.

9. GARMIN FORETREX 401 GPS

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
85.8
GARMIN FORETREX 401 GPS
Use
86
Battery Life
88
Visibility
86
Connectivity
83
best offer for today
$149.00
Pros:

Keeps track of your path and displays it as a dotted trail on the display

Allows you to create and store routes to your favorite places

Cons:

Even with higher density batteries, the battery life could only last around eight hours

Garmin makes its first entry on this list, but not its last. Their finest model is the Foretrex 401 GPS, with only one small gripe bringing it down.

Read more

Software

It features a high-sensitivity GPS receiver with HotFix that provides excellent reception in heavily-covered areas (forest, underground). Plus, the Foretrex keeps track of routes, tracks, and waypoints.

The Battery

Requires two, AAA batteries and will last approximately eight hours (which will vary depending on the type of battery you use and how often you use it).

Display

A large LCD display enables an easy to read interface, while the back-lighting assists in darker environments.

Wireless/Bluetooth Functionality

Using Garmin Connect, you can get a detailed analysis of your activities and also send tracks to your outdoor device.

Additional Functionalities

Besides the basic GPS functions, this features a TracBack feature that will retrace your steps, sunrise and sunset times, hunting and fishing information, and a heart rate monitor.

Overall

If not for the sub-par battery life, this may have taken the top spot. Everything else, however, is nearly top notch.

10. YAESU HANDHELD VHF/GPS

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
84.3
YAESU HANDHELD VHF/GPS
Use
84
Battery Life
88
Visibility
83
Connectivity
82
best offer for today
$374.00
Pros:

It can be reprogrammed in minutes using the PC Programming software

Includes a 66 channel GPS receiver

Cons:

The plethora of features are not easily accessible and can be overwhelming for someone looking for a simple GPS

This thrives in being a VHF transceiver and has built-in GPS capabilities, but could be a little too complex for some people.

Read more

Software

A 66 channel GPS receiver is included for reliable navigation and there is the capability of programming up to 200 memory channels.

The Battery

It comes with a Lithium-ion battery pack, but an Alkaline tray is also included which takes six AA batteries.

Display

A display dimmer, backlit keypad and full dot-matrix LCD screen provide a great display.

Wireless/Bluetooth Functionality

For USA versions, you can access the NOAA Weather Channel and Weather Alert.

Additional Functionalities

The Airband transceiver provides VOR and ILS navigation on the “NAV’ band and full communication on the Aircraft communications band.

Overall

For an everyday individual, this may be a tad bit over the top. Passed its complexity, though, it gets the job done at an excellent rate.

Criteria Used for Evaluation

Use

While some of these GPS’s have other functionalities, and some simply just have an internal GPS implemented, the main point of your GPS search should be finding the most accurate and fasted model possible. All the fancy design features and extra functions aside, this is what makes GPS’s so popular. When trying to decide, which ones have the best GPS, you can keep a few factors in mind.

First up, keep an eye out for models that sport a high-sensitivity GPS receiver. This is more than a fancy labeling gimmick and accomplishes more than just sounding cool. A GPS with a high-sensitivity receiver will use large banks of correlators and digital signal processing to produce signals as quickly and efficiently as possible. This makes the signal outdoors extremely fast, but also makes indoor signals useable. Due to the extra processing power, these types of GPS’s can integrate weak signals into a position.

During this list, you also may have noticed some models sporting a certain number of channels. This can be very confusing and is so in-depth that you could write a paper on it. To save you the time and sanity, here is a quick explanation. When a GPS has 66 channels, then it can track the location of that many satellites at the same time. Now, there are not nearly that many satellites in orbit so what is the point of going to a number that high? To speed up the process, as satellites must first be acquired when they come in view of the GPS, multiple channels can look for the same satellite.

The last two points are great to keep in mind for traditional GPS’s, but there are special versions out there. One on this list, in specific, is a GPS that will track your vehicle or children. Models such as these will be used in an entirely different way, such as for tracking your vehicle in heavy populated areas or making sure your teenager is not out partying.

Battery Life

With technology devices like GPS receivers, a key factor that always comes into play is the battery life. That and what type of battery design is implemented. For example, is there an included battery that comes with it, is it removable? Or, do you have to put AA or AAA batteries inside? For pure performance, you will not need to concern yourself with which type of battery is utilized. But, some people may prefer one method over the other.

Let’s start with GPS’s that require AA or AAA batteries. The most obvious problem with this method, for some people, is that you are required to add and remove new batteries when needed. Plus, if they die and you do not have replacements, you can’t operate it unless you buy some new batteries. However, there are a lot of options at your disposal with this method. For example, it is your preference to either buy cheap batteries (such as Alkaline) or premium batteries (such as Ultimate Lithium). This will have direct implications on how long the GPS will last.

What about models that have a built-in battery? Mainly, the best aspect is the ability to charge it anytime you, please. If it runs out, if you have the means to charge it, you can still use it. Most will do so via USB, so if you are on the road you probably could charge it in your vehicle. If the battery is not removable or not a universal design, though, the biggest issue can be if it reaches its shelf life. At this point, you may have to buy a new GPS (if there is no way to get a new battery). As far as how long they will last, in general, most will last several hours before needing new batteries or a charge.

Visibility

This will weigh differently from one person to the next, as the display will not affect the performance in any way. But, for some, it could be a deal breaker. Much like a smartphone or laptop, for some, the resolution and clarity is the most important aspect. After all, it is beneficial for you to see the GPS information that is in the palm of your hands. While it is very rare for GPS’s do not have a display at all unless they are designed for special purposes or to be connected with an additional source, some sport better ones than others.

As they are small in nature, the amount of space the display takes up is a factor to consider. Thankfully, it is not difficult to find this out as all you need to do is look at a picture of the interface. Some will have a half screen and half buttons, while others will have a full display with touchscreen controls. Speaking of a touchscreen, that is another factor. If you prefer keys, then avoid GPS’s with a full-screen display.

Proper backlighting plays another role and allows you to use the device at night. But, in the daylight, a backlit screen may reduce battery life so you could also look into ones with a dimming control. Lastly, some versions will have a monochrome display. Meaning, either a black and white display or one that focuses on one central color.

Connectivity

This is where GPS devices transform themselves into more than what they were designed for. Most will just expect a GPS to be a logical way for them to receive directions and understand where they are at all times. But, they can do so much more than that with their wireless and Bluetooth functionality. Not all of them will possess both, or even one, but the models that do hold enhanced value. Especially, for those that utilize Bluetooth technology.

For a brief explanation of what Bluetooth technology is, it allows you to sync data from devices that have it enabled. So, both devices need to have the technology in order for information to be synced. With GPS’s that have it, you could connect them to your laptop, smartphone, and tablet. Some models will have more use for it to upload your data on different types of applications, while others will utilize it for you to navigate through more free maps.

With wireless capabilities, some GPS’s will track and map with Google maps over the internet (doing so in real-time). Then, there is Garmin Connect. With all the entries on this list, Garmin proves that they are a frontrunner in GPS technology. One of the reasons why is their products utilize Garmin Connect, including their handheld GPS’s. With this software, you can get a detailed analysis of your activities, send tracks to your outdoor device, upload data and view it on other devices, and share routes and geocaches between units.

Of course, as with the display, you can make the claim that these types of features are not prevalent in the overall performance of a GPS (at least for the versions that do not require Bluetooth). But, this type of technology can make a good product a great one.

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You Do Not Need to be an Expert

GPS technology can be extremely overwhelming and for those of you who do not know much on the subject, do not worry about it. To use and enjoy a GPS handheld, you do not need to be an aficionado of GPS technology or need to understand every single process. The point is they are convenient devices that will assist you in getting you where you need to go. As you have seen, some work a little differently than others, but the overall point remains the same.

Other Factors to Consider

Advanced Features

At this point, it has been drilled into your cranium but these devices are very diverse in nature. At least, some of the most elite models are. There are a plethora of extra features that you can look for and they will vary from model to model. While you should not expect to hold a full-length phone conversation or stream a Skype call, there are useful functions that GPS devices can perform past their original intent.

Firstly, you have the additional information that some can display that may not be much use to you. For example, ones that come equipped with the ability to monitor your heart rate. Or, the models that display basic hunting and fishing information. If you do not care about hunting, fishing, or fitness you may have zero uses for that type of information. Models that work as radio transmitters may also include the means to get in touch with a search and rescue monitor center in the case of an emergency, which could be handy if you have a fear that something bad is going to happen to you.

The way you want to use a GPS could also be different, so you could find restaurants and stores that are located near your area. Then, there are the models with microSD card slots. These become useful in situations where you require more detailed street maps. Simply, insert a card with this type of data and some will then display for you turn-by-turn directions to your intended destination.

It is a mouthful and a handful to consider, but just disregard the features that have no meaning to you. From person to person, this will vary so tread carefully in this compartment.

Ease of Use

If you were keeping score at home, you probably noticed that a lot of the entries on this list had similar issues. No product is perfect, so flaws will always be present, but there are some that could sway your decision. Three really important ones to keep in mind is how detailed the instruction manual is, if the included maps are too basic (if it has maps) and if it requires a subscription.

As far as the manual goes, the more you use the device the less you will need it. But, at first, GPS’s can be very confusing and it helps when the manual is detailed enough to inform you of what to do. Some have manuals that do the complete opposite and provide you with useless information. Then, there is the issue with the maps (with ones that have them). With Bluetooth, some models will allow you to gather more detailed versions. But, not all have this benefit and you may need to buy detailed maps. Lastly, some systems will need an active subscription to function properly. You may not be interested in paying anything past the initial price tag.

Frequently Asked Questions

q: Who Controls GPS?
a:

GPS is a technology that most people are aware of, but one that few probably fully understand. A common question when it comes to this, is who controls GPS? To better explain this, it is important to know that GPS stands for Global Positioning System. This is a space-based radio navigation system that is controlled and monitored by the United States government. GPS coordinates are not randomly given to you by a software or program.

Although the United States is the primary system used around the world, other countries are developing new systems to eventually join them. However, when it comes to operations and management, the U.S. Department of Defense is responsible. Because the U.S. Coast Guard serves as the civilian interface to the Department of Defense, it is then their duty to communicate GPS information to the public and report any issues that happen. Clearly, this is coveted technology and the United States does not want to mess around with who operates and maintains it.

q: Can You Use Your GPS Internationally?
a:

Alright, so enough with the history lesson. Let’s now dive into some questions that you can take with you in the real world. Some people either want to travel to another country or live in one altogether. This then begs the question, do GPS’s work in countries outside of the United States? The simple answer is yes, as GPS receivers are designed to work anywhere in the world (as far as location goes). However, there are some precautions that you should be aware of. Most notably, for GPS devices that can store maps, is that map data could be hard to obtain.

With certain devices, they will only be of use to you if you can download map data in your area. Chances are, in a different country, this map data may not be available to you. So, if you are trapped in Japan and have no idea where you are, random latitude and longitudes may not assist you that much. However, when you are visiting another country, it is wise to at least have some sort of GPS to help you navigate (even if it only minorly helps).

q: What is Geocaching?
a:

It was not mentioned too many times throughout this list, but you may have overheard the term geocaching before. If you have, do you know what it is? It may come as a surprise, but geocaching is nothing more than a recreational outdoor activity that utilizes GPS technology. Basically, it is a real-world outdoor treasuring hunting game that requires you to navigate to a specific set of GPS coordinates. The end result is to find a geocache container, which can be considered the treasure.

All you need to join in on the fun is a GPS device, such as the ten that were listed, and a basic membership at Geocaching.com. Once you have confirmed your free Basic Membership, with the option for a Premium one if you like, simply enter your current postal code and click search on the “Hide & Seek a Cache” page (all done on Geocaching.com). Then, choose a geocache from the list and load the coordinates into your GPS device. From there, treasure on to find the hidden geocache, but make sure to return it to its original location for future treasure hunters.

q: Will GPS Devices Work Underwater?
a:

Much like with other technology devices, some GPS handhelds are protected with some sort of waterproof or water-resistant technology. There are limitations and some will just protect against light rain and accidental splashes, but not if it is submerged in water for a certain amount of time. However, the reality of the situation is even if a GPS device is designed to withstand gallons of water it would not work properly. Nope, not even if you were in a container (such as a submarine) underwater it still would not function.

Why may you ask? It is because of the way that the GPS receives directions and specific coordinates. What happens is they listen to signals from various satellites in space. From there, they will mathematically calculate their own position in reference to the satellites. But, this technology does not work as well, or at all, underwater. As Joshua Niedzwiecki, the BAE Systems director of sensor processing, points out radio signals do not broadcast very far underwater. Though they are constantly developing the technology to overcome this, for now, it is just like if you tried to use your smartphone deep into the ocean. Eventually, you would lose all connectivity.

q: Do You Need the Internet to Use a GPS Device?
a:

Some specific devices will utilize the internet in some way, or Bluetooth. But now that you know the process of how a GPS works, this question should be easy for you to answer. Because GPS devices receive signals from various satellites that are floating in space, the internet is not required for them to function properly. Even for specific versions that allow you to upload for detailed maps into the system, the internet is not required for this. To download the maps on the SD card, to begin with, unless pre-installed, you may need the internet. However, there is no need for concern if you have no access to the internet; the GPS will still function as designed.

q: How Well Will GPS Work Indoors?
a:

As you are starting to conclude, GPS technology is a little limited in terms of usability. You now know that it will not work underwater and can be extremely limited in other countries, but it also does not function superbly indoors. Technically, it can be used but it may not be very useful to you. When trying to use the satellites to receive a signal, the walls, roofs, and other indoor objects reduce the effect of the signal. But, there is a system out there that was designed for this very purpose.

An IPS, which is an Indoor Positioning System, is a system that is specifically designed to locate people and objects that are inside of a building. They achieve this using radio waves, acoustic signals, and various other sensory information. However, integration between the two separate technologies can be made. In specific, GNSS receivers that have a high sensitivity are able to adequately receive satellite signals in most indoor environments.

Sources

  1. Kimberly Goone, How to Choose and Use a GPS, Aug 08, 2018