Tough solar power, small size triple sensor (a/b/c), low temperature resistant (-10 degree c/14 degree f), triple sensor ver 3, 100m water resistant, altimeter, digital compass, barometer, thermometer, world time, 4 daily alarms + 1 snz, 1/10 second stopwatch
Countdown timer, full auto EL backlight with afterglow, 12/24 hour formats, storage battery: solar rechargeable battery, power saving function, module 3443