Triple sensor technology - Altimeter Barometer Thermometer. Multiband 6 atomic timekeeping. Digital compass w/ bearing memory. Tough solar power charging. Silicone band. Resin and stainless steel bezel. Auto LED light. 5 Daily Alarms. Water resistant up to 100m. Quartz movement. Barometric pressure and altitude. Low temp resistant: 14 degree Fahrenheit. Altimeter measuring range: -2300 to 32000ft. Up to 30 manual memory measures. Auto log data. 1/100th Sec. stopwatch. Full auto calendar.