Please do not spend your time and money with this wristtop. I received with battery problems, it does not charge completely and suunto does not have the proper tech service available to fix it. You have better and cheaper options such as forerunner 201 or 301 or the timex trail runner. The suunto signal detection is quite weaker and when hiking grand canyon the unit remained most of time without capturing signal at all. 1 star

I bought this watch to track distances while jogging on new routes. The unit will stop tracking GPS everytime I go out. I have never been able to go 3 miles with it tracking the entire time. When it stops tracking, you have to stop moving for 90 seconds to allow it to re-acquire its GPS signal. For a jogger/runner, this performance deficiency is unacceptable.

Update: I returned my watch so they could repair it. They sent me a new one. It had all the same problems as the first one. 1 star

I found the remarks of the one other positive reviewer quite a relief: the guy who pointed out that good performance of the GPS (i.e. the key unique feature distinguishing this watch from other Suunto models) hinges critically on whether or not you first get your satellite 'fix' properly. I have found that, if you wait the very first time you use it, to get a proper (not flashing) firm fix, then subsequent fixes have been relatively rapid (usually around 2 minutes in an urban environment. Once you have a lock-on, then subsequent performance is relatively fine.

I have a few minor gripes about the software visualisation. When it does loose satellite connection, rather than not graphing for the drop out period of time, the software includes the squiggly deviations to route when it can't locate you. This has the consequence that some journeys appear like I fly around or walk on water. This is not the case. I would prefer just blanks for drop-out periods of time. Any GPS device works much better in open spaces rather than built-up urban ramblings.

As a watch model, the comparable device is the Garmin forerunner. The Garmin probably has more 'stickability' and usability for its GPS (I have Garmin handheld for comparison). Its greater reception and stronger GPS reception is due to its bigger aerial. That means it's also bigger and probably emitting strange things into your arm. The battery life on Garmin receivers is very frustrating and I have had no problems with the x9i though its continual GPS use would be limited to 4-5 hours. Personally, I am prepared to live with the slightly more delicate reception of the x9i in order to use a much more elegant device. The watch looks like a watch and its smooth contours and rubberised grippy surface have design aesthetics and simplicity of display that Garmin doesn't. If you primarily (or only) use GPS, buy the Garmin. If you are concerned about looks and multi-function and if you are patient to setup a good connection first time, I think you will be pleasantly rewarded by this watch. I really like that it charges off my USB. Also, using Desktop Parallels and Win XP, I exchange the data into Trek Manager and X-loader uploading to Google with my Macbook ;-) 5 stars

Should have ordered a Garmin etrex and a sunto vector. Amazon shipped me the wrong color watch...but I was in Iraq and needed a watch and didn't want to wait another 4 weeks to get one. Then it broke (the cover/bezel/frame) the third time I used it.

Pros:
1. Small (compared to other GPS watches)
2. Accurate (compared to military maps and GPS)
3. has MGRS
4. good quality charger/acessories/softwear
5. battery lasts a long time (w/o using GPS) before needing to be recharged

Cons:
1. because it's small, it has hard to use button combos
2. does not appear sturdy and it broke easily (but still works)
3. if I am moving at all, I can't get a fix.
4. Need a computer to take full advantage of features 3 stars

I have serious problems with this unit and with suunto:
1. The unit came with manufacturing problem: the battery is not charging completely what is a severe problem to hikers
2. The suunto's tech service & representative does not know how to fix it
3. The warrant is not international, that means if you hiking abroad you are not covered.
I believe you can have better options than this USD500 unit. 1 star