Features: full auto el backlight low-temperature resistant solar power duplex lcd compass 10,000 m altimeter height gain barometer (260/1100) thermometer (-10c / +60c) world time stopwatch function (1/100 - 24hr) timer - 1/1 min.- 24 hours 5 daily alarms key tones on/off battery level indicator full auto calendar 12/24-hour timekeeping mineral glass accuracy +/- 15 seconds per month dimensions 57.3mm x 50.9mm x 15.3mm (h x w x d) weight65.4g