GREAT FUNCTIONS FOR THE MONEY .. NOT EASY ON THE WRIST.. but heck it's a GPS
597869
I was looking for a watch that could display multiple time zones, and although it's hard to find this watch can actually display up to 5 time zones simultaneously, with the touch of a button (if set up properly).

Pluses: There are so many functions hidden inside the menus of this watch, and not just for Aviation, .. Mountaineering, Hiking, ect...  Also synches to Garmin Pilot App.  In GPS mode I like the NRST function, where with 1 button; you can find the nearest airports.

Minuses:  Bulky: The biggest one for me, is the bulk of this watch.  After a few weeks of constant wear;  my wrist and hand actually hurt and a knot started to develop.  I stopped wearing it, and this went away.  This is NOT a watch for everyday wear (and I'm actually back to my Gshock for that).  I still like to keep the watch with me, so I made a clip (I think there is actually a clip Garmin Sells), and now clip it to my belt loop and keep it in my pocket.

GPS Satellites don't pick up if you wear on your wrist in cockpit:  Maybe because I fly a Biz Jet, but I never saw the GPS work while on my wrist in the cockpit.  Perhaps if you fly a C-172 or Helicopter, it's different.  Also I fly overseas and I think it must pick up satellite coverage in the USA better than other places.

My solution actually found itself from my comments about the bulk of the watch and taking it off my wrist.  I now keep it on the wind screen of the plane I fly and it picks up Satellites fine.  I reference it for nearest airports a lot and also for direct to my destination airport.  I'm trying to get it to work with the Garmin Pilot App, but waiting for international coverage to open up for that.

Overall for the money you are not going to find an Aviation GPS watch with as many functions as this watch.  I wouldn't make it your everyday watch, but for fly days it'll work.

Garmin is good about updating the software on the watch.  I wish they would include some of the profile functions of the Fenix so I could use Basecamp with this watch.  I'd like to be able to synch to the Basecamp ipad App with the D2.
1362432
This is a good GPS device for people on a budget.  It has the basic functions of most automotive GPS devices: point-to-point directions, voice directions (minus street names), "points of interest" (nearby stores, restaurants, schools, etc.), and estimated time of arrival.  The one thing I like about this device is that if you miss a turn, it recalculates your path and gives you a new set of instructions to get where you're going.  Also, it counts down (on the display) how many miles or feet before your next turn, so you don't have to guess how far away 200ft is.

Overall, the closest thing I can liken a lower-end GPS system like the Nuvi 200 to is having constant and instant access to Mapquest or Google Maps at the palm of your hands, wherever you go.  If there's anything negative I could say, it's that every once in a while some of the directions are a little convoluted (in a similar fashion to Mapquest or Google Maps).

If you're looking for something a little fancier (eg. bluetooth, real-time traffic info, voice directions that actually speak street names), then you'll need an extra $400-$500 to spend on a better model.
3647735
I needed a watch with a nigh light and pedometer to track my night run times and distance. Didn't want the fancy heart rate monitor or 24 hour sleep function to track every moment of my life. This is the 3rd watch I have purchased in the past 6 month and it is the better of the 3 but not totally satisfactory in my opinion.  It does work great, isn't terribly difficult to set up, however I did have to go to their website to do the complete set up as the directions that came with it are for the "quick set up" only; the distance seems to be accurate and the battery lasts a while ( 5/6 hours until I have to charge it again). It has a night setting that keeps the light on while you are using the Run or Chrono function which is great for night runs as the illumination is so bright it adds to my night visibility. The 3 negatives: First, the back of the watch is metal and cold. I am not predisposed to feeling cold all the time, but with this watch on, I have to always put it over my sleeve or jacket to feel comfortable; Which brings me to number two: The watch is huge. Wish I known there was a "mini" version as this one is gigantic. In seeing other GPS watches, this isn't the largest one out there, but it is too big to fit under the sleeve of any typical running long sleeve shirt/jacket; Even if the back of the watch wasn't metal and cold, I would still have to put it over my sleeve to account for its hugeness. Lastly, I can't figure out how to find my saved data in the "data" function. Maybe I could figure it out if I go back online to the directions I used for the set up but haven't done so, not a huge issue. Over all the thing works for what I wanted it for but it defiantly could use some upgrades.
3726911
So, this is a good watch, but it takes time for the GPS to get your location correct.  You really need to thoroughly read the instructions and know when to push the buttons for switching, etc.  I find my phone with a running app works better.  As long as you can run with a phone (either in your hand or on your arm), that is a better choice. That way you don't have to download.  But this is a garmin and it's a top of the line watch. I find all of the GPS watches will also vary with distance and time anyway
4742945
Pros:

Nice bright screen. The GPS routing works great, I have not run into any problems while using it, re-calculates quickly if you go off-route. Good turn-by-turn directions. Partial 3D view of upcoming turns. Voice speaks clearly.

Cons:

Given this is a touch screen, the buttons on the right almost seem unnecessary, I rarely even use them. It would have made the unit a little more compact if they were removed. Another thing is no external volume control, you need to go into a couple menus to find volume. I really would have liked to see more of the often used menu options on one screen, it seems I need to drill down into different menus for things someone would use regularly. Once you get used to it, it's not too bad.

Overall:

For the price I don't think you can go wrong for a basic GPS unit. If you need a lot more advanced features I would look at a higher end model. This GPS does what it's supposed to do, no gripes there. The interface itself takes some getting used to. External volume control would have been nice.
2760573
The only thing that would make it better is a brighter back light, and a vibrate alert.
I previously had a 410, but it was entirely too big for my wrist.  I also felt that the GPS was more of a PITA than it was worth.  I get the same stats without waiting for a satellite, and if I just HAVE TO HAVE a map, I can use my phone.  It's light enough to not notice during a run, and I can use it as back up for cycling in case the battery on my phone dies.  Pure win.  The only other cons I'd list is diving into the menu with the buttons can be tedious, but reports of the buttons being difficult to push are overstated.
3230255
I picked this up after my Garmin 305 quit talking to my PC. As noted in the reviews above the documentation is cryptic and the software is clumsy, but once you figure it out it does the job. If you're not willing to spend some time getting acquainted I'd recommend spending the extra money for a Garmin.

I added the heart rate monitor and speed cadence sensor and everything works fine. No problems with reception in cloudy weather. I will say that it will probably take a while to figure out how to operate this device. Here are some hints...

This device is always recording, so when you start it up it's likely to record a short trip as the GPS location wanders around. You need to reset the device when you start a ride to get a clean recording. (To reset, hold down the mode button until the distance goes to 0). Ditto on the end of the trip. The result is that I tend to end up with a few 'trips' that are a few feet long, but they're easy to delete. The reset function also stores the recorded trip into memory for upload, so if you don't reset there's nothing to upload. This is probably the cause of the problems that some reviewers had uploading. I know that it happened to me.

Uploading is accomplished using Cateye Sync. This is functional, but needs work. For instance it doesn't auto launch when I connect the device and always asks what type of device I have. Also, conversion of the uploaded data is pretty slow. Once uploaded it's pretty easy to select the trips that you want to erase or upload to Strava, which is a one click operation. You can also export to gpx format.

All in all I'm happy with the purchase. It gives me everything I need for a lot less than the Garmin alternatives.

***UPDATE***

After a few weeks of use I have to change my recommendation to one star. Here's the problem. I've had two cases where after a ride I wasn't able to upload the ride using Cateye Sync. The sync program finds no data on the first attempt and then hangs on the second. This appears to be a problem with the software, as I was able to retrieve the data from the device using a different PC, but to get it working again on my original PC I'll probably have to reset the Stealth to factory settings. Waiting to do this until after I hear from Cateye support.

Until this problem is fixed I wouldn't recommend buying this device. Losing ride data makes it pretty useless.
1020559
I wanted a portable GPS unit with at least 4" display and text-to-speech feature. This is my first GPS. I would say the text-to-speech feature is a MUST; otherwise, you may get confused.

A 4" Garmin was too expensive and it didn't look very attractive.

I like Navigon because it made GPS for European cars, it had photo images of the streets, and it looked really good but I need to get the expensive high-end model for the 4" display (the free lifetime traffic info was very attractive too). However, it didn't have any audio and/or video features and several reviews indicated problems with navigation and the text-to-speech.

I could pick TomTom but I liked HK. I picked it has mp3 feature. I wanted the GPS 510 video one but that costed more than I expected. Anyway, I guess I expected too much from HK.

As a basic GPS unit, it's great, especially with the large screen and text-to-speech feature. The display will adjust day/night automatically.

Pro:
1. 4" display, looks beautiful, solid built.
2. It's very easy to use.
3. Speech is clear.
4. Re-routing is very quick (usually takes 5-6 seconds).
5. You can do navigation and listen to music at the same time.
6. It's not too difficult to learn all the features.
7. Long battery life (I think it's 5 hours).

Con:
1. The initial search for GPS signal is very slow, up to several minutes.
2. I turned on all the POI but I don't see them all the time. Most of the time, the unit will tell me turn on which street and then tell me to turn right or left to a ramp but sometimes it tells me to turn left/right after 200 ft. If I set my routing priority to shortest time instead of shortest distance, it will try to get me on the highway even though it is a much longer route.
3. I don't know how to get the most updated map...I am sure it does not
have some of the 2007 constructions.
4. As someone commented on the older model, GPS-300, the speaker was not good for music. I used the unit to play mp3 songs on a SD card (not included) and it didn't sound good. Yes, it's a HK! It may be good for radio programs or sermons.
5. The "quick user guide" and the owner's manual on the HK website are the same. They are way too simple. You need to explore the unit for different features. The guide scared me. I thought I need to charge the unit in my car all the time but someone mentioned you can use the USB cable to charge it from a PC. Yes, I tried it but it didn't tell me when it was fully charged.

I bought the dash mount unit but this GPS unit cannot be sticked to it tight. The unit will move a little bit at a time but it will not fall out from the dash mount.

I am still ok with the unit but I didn't focus too much on the mp3 feature and tried TomTom.
3341045
Can't attest to longevity as it is new...but this is a great GPS at this price point (got mine slightly cheaper elsewhere, sorry Amazon). The last Garmin I purchased was one of the original, bulky units that sat on the dash (sometimes) sand bag and all for over $500.00. Gone are those days and here is a unit with a great display, suction cup, and features as well as lifetime maps. A good package all around from the leader in GPS. I've been through a Tom Tom (user friendly, but lacked features) and even a Magellan. Full circle, the new Garmin Nuvi 55LM is a slim, sleek, user friendly unit with features such as trip planner, logging your trips, and even option to use as a rear view camera with additional accessories. The 5" display is more than adequate; 6" may even be cumbersome. Some would say.
4708775
I bought this watch to replace my use of my cell phone running the runkeeper app.  It does exactly what I need it to do - allows me to run with my hands free (last time I looked, the droid did not have an arm band), and the battery holds up over the course of a run plus a great deal longer.  I am still figuring out all of the functionality the watch has to offer, but that is just icing on the cake as it is over and above what I wanted it for.

The only issue I can see is the GPS acquisition.  I have not had the watch find a GPS signal as quickly as reviews and videos have shown.  GPS acquisition averages 5 to 7 minutes for me.  I have initiated the GPS search in a variety of places with clear line of sight to the sky.  I own a phone that is GPS capable and 2 hand held GPS units so I do have a basis for knowing the conditions and speed with which they acquire signal.  The soleus is no quicker than any of the three and slower than one of the hand held units.  Not a huge deal if I remember to start the GPS search while I am stretching.

On a side note but not an issue with the watch, I wish Strava had more functionality without requiring a paid subscription.

Overall, I am happy with my purchase and I have already recommended the watch to a friend.
3722913
I looked at many different units before selecting this one. I wanted one that would work well for hiking, back-country skiing, finding hidden rock climbing areas and also for geocaching. This unit does it all and does it quite well; my only complaint is that, having owned GPS units before, I thought I could take this out and "wing it" in terms of figuring out the features. Admittedly, I am no genius, but neither am I a hopeless idiot, and there was much I could not figure out about this unit by just using it, other than the very basic functions (I like to use many of the more sophisticated features, otherwise I feel a GPS is not much more than a glorified compass). I had to play with the unit in the field, then read the manual, then go play with it some more, and then finally get it to do what I wanted. In this day and age we all use multiple gadgets in our everyday lives, and my favorites are the ones which a person can figure out by just playing with them (Apple products are a good example: did you even have to open your iPod manual? I didn't....it just made sense right out of the box). This unit requires some homework--in my view, more than should be necessary--but once you've done the work, this GPS does everything I need it to do, and does it well.
1928409
The functionality and ease of use is awesome however the battery life is less than ideal with battery changes required fairly regularly. Other than that I would definitely recommend this gps.
4786955
I love this watch with all the features it has to offer for a good price. The reason keeps me from giving it a 5 stars is slow GPS connect. I live right in the city and have been running around town and some out of state locations. At first I thought the slow connection was due to location recognition and would improve over time. However, it always takes quite a while (sometimes more than 15 min with a lot of restarting) to connect. I have had it for about 2 months now and no improvement. I tried to keep high battery level and all. This is getting more and more frustrating as I have races coming up in the Fall and hope to use this for tracking during the race. Too bad I've been trying for so long, so I can't replace and see if it was just an issue with my watch. I will try to contact the seller for an upgrade option or anything that could improve GPS connection for this watch.
365065
For the money this is a fun watch. It has a lot of features and some work well others don't. But again for the price its fun to play around with. I've purchased watches in the past that were just watches and they cost more than this. It took a GSM sim card no problem and made calls and text messages. I don't think the browser will really work but I'm still working on it.

Fun for the money but not a Galaxy
3338434
Overall I like the Nuvi, but I am on my 7th year as a road-warrior and have always used Hertz Neverlost (Magellan) GPS systems in my rental cars.  I think part of my problem is trying to compare the handheld GPS to a DVD-based GPS system and am expecting too much in the handheld.

Pros:
Great touchscreen, Perfect "pocketable" size, good sound, voice direction commands usually come before the turn you need to make (which is nice, and not always the case with voice GPS systems), easy to mark favorite locations

Cons:
It does not always pick the best routes.  I played with it a lot around my local area and it tried to take me out of my way on several occasions (in the worst case, getting off a straight road I was on, talking sort of a circular detour, and getting right back on the original road just further down the line. I don't care how you try to explain it, that route is neither the fastest nor shortest route available), Traffic add-on module probably not worth it for most people, bluetooth functionality probably not worth paying extra for, battery life is less than I would like (only a few hours), satellite acquisition generally works quickly, but when it doesn't, it takes a while for it to recover, even in large metro areas (San Francisco, being one) outside on clear days, typing layout is abc, not qwerty (there may be a setting to change that, but I haven't found it,at this point)
2251812
I am Tech Designer by trade and I needed a device to function for a person with hearing disability's. I looked everywhere for a simple device (easy for someone to function) that vibrated on calls. Yet the market on wearable tech was not great and most were bulky thick watches at best. So the function here works properly.

Pros:
Vibrates on call
Vibrates on a set distance away from phone
Has Time and battery display
Display's call number, heard that some phone's may display caller name.

Cons:
Can vibrate at odd times
loss of time. not very good clock programming.
loss of signal that will cut Bluetooth linking (too be expected)
May be difficult to pair devices (would of liked a separate button just for pairing.)
Not water proof.

anyways, not great and I never expected a miracle to happen but bottom line, it was very much needed.
501571
I just bought the navigon 2100t for $99. I have never owned a GPS, but I have started using it and it seems decent. The Text to Speech works great. The build quality seems decent. On the down side, the fonts are a bit small, and the screen keypad is a bit small, but I had no problem with. My wife on the other hand I don't think liked the size. I have taken a few trips with it, and it had no problems getting me there. There might be a slight delay on some of the functions, but not entering street names..