Get back to the origins of G-Shock with this revival DW5900 series sporting the design and face colors of the original models. Features include stopwatch and timer, EL backlight, countdown timer, daily alarms and more. Shock resistant Electro-luminescent backlight Selectable illumination duration (1.5 seconds or 3 seconds), afterglow World time29 time zones (48 cities), daylight saving on/off 1/100-second stopwatch Measuring capacity: (59'59.99''') Measuring modes: Elapsed time, split time, 1st-2nd place times Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) 5 daily alarms (with 1 snooze alarm) Hourly time signal Full auto-calendar (to year 2099) 12/24-hour format Button operation tone on/off Regular timekeeping: Hour, minute, second, pm, date, day Accuracy: ±15 seconds per month Approx. battery life: 5 years on CR2025 Size of case / total weight: 51.4 x46.8 x15.5 mm / 60g