Highgear Summit Watch - Free 2-Day Air Shipping on all Watches $149+ Specifications Summit by High Gear: Weight: 2.5oz (70.9g) Key Functions: Altimeter: Digital altimeter Working range -2,296ft to 29,500ft (-700m to 9,000m) Current, Accumulated and Maximum altitude in ft or m Altitude resolution 3ft (1m) Graphic altitude trend display Stores 20 altimeter data readings with altitude, time, and date Barometer: Digital barometer Sea level pressure and absolute pressure displayed in mbar Resolution 1mbar with working range 300mbar to 1100mbar Bar chart for barometric trend for the past 24 hours Weather forecast Barometer/Temp display Compass: Digital compass Displays bearing in degrees and cardinal points Resolution 1 degrees with 16 cardinal points Adjustable declination User option for single or continuous reading Thermometer: Digital thermometer Resolution 0.1 degrees in degrees F and degrees C Working range +14 degrees F to +140 degrees F (-10 degrees C to +60 degrees C) Watch: Time/Day/Date/Month with Dual Time Zone 12 or 24 hour format Time/Temp display Dual daily alarm Hourly chime Chrono: Resolution 1/100 second with maximum time range 24hr 00min 00sec Maximum 50 laps/20 runs Times for each lap and split with best and average laps' time Key Features: Stainless steel navigation bezel EL backlight system Water resistant 30m Consumer serviceable battery (1 CR2032)