Garmin Fenix 5x Plus Sapphire GPS Watch
Ultra-rugged and fully-featured with cutting-edge tech, the Garmin Fenix 5X Plus Sapphire is the ultimate essential for serious adventurers and athletes alike. This suped-up version has all the same top-end sport and smart features as its predecessors, like GLONASS and GPS activity tracking, barometric altimeter, wrist-based heart rate, on-screen topo maps, and quick notifications, but has also been upgraded with wallet-free payments, music storage, more in-depth navigation and, perhaps most significantly (and only in the 5X Plus, mind you) a pulse oximeter to measure blood oxygen concentration--the first sports watch with such a capability. Primarily useful for excursions into the alpine, the Pulse Ox Acclimation sensor uses the same laser technology as those hospital finger clips that read your vitals. It shines two beams through your wrist and measures how much light reaches a detector on the other side. In the case of sports, this helps determine how your body responds to high alti...