Imported Multi-Band Atomic Timekeeping, Tough Solar Power (Approx. battery life: 6 months on full charge (without further exposure to light), Shock Resistant, 200M Water Resistant, Full Auto EL Backlight with Afterglow, Neo-brite Luminous Hands and Markers, World Time -31 times zones (48 cities + UTC), city code display, daylight saving on/off , 5 Daily alarms, Hourly time signal 1/100 second stopwatch -Measuring mode: Elapsed time, split time, 1st-2nd place times, Countdown Timer -Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments), Full Auto-calendar, 12/24 hour formats, Button operation tone on/off, Battery power indicator, Power saving function Accuracy: +/-15 seconds per month (with no signal calibration)