1.outdoor altimeter with compass 2.barometer & thermometer & weather forcast 3.stopwatch & timer 4.water proof 5.CE & ROHS professional outdoor altimeter with compasswrist watch altimeter1.altimeter & compass & barometer & thermometer & weather forecast2.relative height measurement3.record the highest and lowest altitude automatically4.altitude alarm5.climbing speed measurement6.record the total height automatically7.metric version and imperial version altermative8.calendar & time9.chronometer & timer10.EL backlight11.titanium metal case12.30M waterproof13.battery:CR2032
