Atomic Watch Receives time calibration radio signals which keep the displayed time accurate Time calibration signal reception(one time per day at 1:00am) Electro-Luminescent backlight with afterglow 50 meter water resistant World time, 29 time zones, 30 cities Daylight savings time on/off 1/100 second stopwatch 5 alarms Auto-calendar Accuracy: /- 20 seconds per month Black rubber band Approx. battery life: 2 years on CR1620 |