For the vertically inclined, the Suunto Core is the professional benchmark for ABC altimeter, barometer, compass wristops. Forecast the weather, know how far you've gone, navigate, and make intelligent decisions in the outdoors. Altimeter to 30k feet: Difference Measurement Start from 0, Logbook, Automatic Mode. Barometer: Storm Alarm, Weather Trend Indicator, Weather Graph. Digital compass: keeps you on course easy calibration declination. Depth Measurement: Max. Depth 30 ft10 m. Watch: Dual Time, Countdown, Date, Alarm, Predicted times for sunrise and sunset. Pressure gauge operates in four distinct modes, including an automatic setting, switching between altimeter and barometer accordingly. Compass features a rotating bezel for traditional use, or a one touch function that allows you to sight, lock and follow a bearing. 4 language menu English, French, Spanish, German button lock. Due to federal shipping restrictions regarding products containing lithium batteries, this product can only be shipped to the 48 contiguous states. It cannot be shipped to Canada, Hawaii, Alaska, Catalina Island, Puerto Rico, APO, FPO or international addresses. Thanks for your understanding.