The Suunto Ambit3 Peak is the bomb when it comes to altimeter watches. In addition to an altitude and barometric pressure reading, it also comes fully loaded with GPS functionality and a plethora of other cool data-capturing features. Of all the watches tested, it constantly provided great GPS accuracy along with easy to see altitude graphs and barometric data displays. In addition, the Suunto Movescount app allows you to upload and follow routes if you wish. It can navigate to and from a variety of points using the GPS function and compass.
That said, with all these fancy features, there is a tradeoff that can directly affect any consumer in the market for an altimeter watch. The battery life is sub-par, lasting only 22 hours (at most) with the GPS function on. This limits the use of the watch to day use when using the GPS. That said, with GPS function off, it lasts up to a month. In comparison to the Garmin Fenix 5, there is a little less battery life and fewer features, but better accuracy. So, if you're in the market for a watch that has a lot of great features and provides great data displays, and accurate altitude readings, this Editors' Choice is our top pick! However, if you're looking for something that has a battery that truly lasts, check out the solar powered Casio PRW-6000Y instead.