The Suunto Core Classic Watch keeps you informed in the outdoors with an altimeter, barometer, thermometer, weather trend indicator, and compass built in. The altimeter features numerous innovative features for improved accuracy. It's an essential tool for your adventures. Altimeter, barometer, compass, thermometer, and data logging. Altimeter with log memory and altitude difference measurement. Barometer with storm alarm and weather trend indicator. Automatic altimeterbarometer switch. Compass with easy calibration and digital bearing. Depth meter. Watch, dual time, calendar, stopwatch, countdown timer, alarms Sunrisesunset times for over 400 locations worldwide. Digital thermometer. Menu based user interface in English, German, French, or Spanish. Altimeter range: 1600ft 900m to 29500ft 9000m. 30m100ft water resistance with underwater buttons. Electro luminescent display. User replaceable battery. Comfortable, elastomer strap.