The Coros Vertix Sportswatch Measures Your O2 Levels
Designed for action in alpine environments, the Vertix from Coros is a 48mm GPS sport watch that features na Altitude Performance System that measures & tracks the oxygen levels in your blood. In addition to the oximeter, there’s an optical HRM that will give you heart data for your runs and swims, too. The grade 5 titanium watch bezel and back case is twice as strong as traditional steel, the sapphire glass is virtually scratch resistant and the digital knob can withstand a drop of 25 ft. Battery life: 60-hours in GPS mode.