Changes

The Suunto Ambit3 Run is an [[Best Running Watch| excellent running watch ]] with good GPS accuracy. The "Run" in the name indicates this is the cheapest of the Ambit3 range and the best value for most runners. It lacks some of the features of the more expensive Ambit3 watches, but these are only likely to be valuable if you're an ultrarunner (longer battery life) or a multi-sport athlete. The Ambit3 Run offers great functionality and reasonable GPS accuracy, and it's only significant flaw is the inability to display [[Pace From A Footpod]] while getting distance from GPS. For a simple evaluation of a GPS watch, I look at how well it can answer some basic questions:

* '''Where am I? '''The Ambit3 has some basic navigation functions. There are no maps, but you ** '''Course Outline'''. This is an outline of a route that can download a course, and be downloaded. I've found this useful during ultras or in unfamiliar cities where I've needed to know where to go. Note that there's a no "back to startTrack Outline" which displays where you've been.** '''Back To Start'''. This is a simple arrow. So the Ambit3 point to your starting point, so it won't tell help you where you arebacktrack. ** '''Back To Waypoint'''. You can mark a location and use the arrow to point to it later. Again, but it this is a simple "as the crow flies" pointer. ** '''Compass'''. A magnetic compass can occasionally help you outorient yourself or the map. Without a magnetic compass you have to be moving for the GPS to give you a sense of direction.

For ultramarathon running the Ambit3 Peak has the extended battery life for runners that expect to be moving during the [[Second Dawn]], though the GPS accuracy is a little impairedbecause of the longer GPS polling interval. See [[ShoesBest Running Watch#Watches for Ultrarunning| Watches for Ultrarunning]] for more details.

The Ambit3 comes in four five versions with different functionality. I think the "Run" has the best value for money, but depending on your usage you may want to pay for a more expensive version. If you're a cyclist, the "Sport" might be worthwhile, though I won't comment further as I focus purely on running usage. If you're an ultrarunner, then I think the "Peak" version could be well worth it. (The Sapphire is only worthwhile if you're hard on your gear and want the damage resistance. A new version called "Vertical" that is part way between the Peak and the Sport versions. One intriguing difference for the Vertical version is that it can make use of the Russian version of GPS called GLONASS. This suggests a different GPS chipset, so the accuracy could be different to other versions. (They all use SiRFstarV, but that's a family of chipsets. For instance the [http://gpsworld.com/csr-launches-sirfstarv-5e-gnss-location-solution/ SiRFstarV 5e version supports GLONASS].) {| class="wikitable" style="margin-left: auto; margin-right: auto; border: none;" !  

| style="background-color: #D5E3BB;" |Yes| style="background-color: #D5E3BB;" | Yes

| style="background-color: #80D600C2D69B;" |Sapphire glass, Steel| style="background-color: #D5E3BB;" |Glass, Steel

* For running on a treadmill, the Ambit3 does a poor job of estimating pace from its internal accelerometer, though I've found that even the best watches don't do well enough to be of much use. A bigger issue is that Suunto doesn't make a Bluetooth footpod, so you have to use a third party option such as the Adidas. The Ambit3 also smooths the data from the Footpod, so if the footpod you use also performs smoothing (like the Adidas), then you end up with a rather unresponsive display of pace.