Altimeter Watch keeps you informed with several useful tools, including a compass, altimeter, barometer, ... functions include dual time, date, alarm, sports chronograph and predicted times for sunrise ... good decisions, such as the Storm Alarm. You look up and see stars, but your watch sees ... an approaching squall, and thanks to Storm Alarm, it lets you know. The barometer / altimeter pressure gauge ... that senses your movement or lack thereof, switching between altimeter and barometer accordingly. ... mbar:YesBarometer range 8,9 -32,4 inHg/300-1100 mbar:Yes Features of Suunto Core OutDoor Sport Watch: ... watch, date and alarm functions User replaceable battery Semi-automatic compass calibration Altimeter...