From super-tough G-SHOCK comes a new collection of GA-400 with a large rotary switch for intuitive operation. Basic G-SHOCK black is accented in silver to create a HIP-HOP artist or B-BOY fashion item motif. Black with silver, which are employed in a large number of accessories, is used on the case, band, and face, for a boldly cool design Specifications Mineral Glass Magnetic Resistant Shock Resistant 200-meter water resistance Case / bezel material: Resin Resin Band LED light Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow World time 31 time zones (48 cities coordinated universal time), one-touch UTC time zone, daylight saving on/off, Home city/World time city swapping 1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time Countdown timer Measuring unit: 1 second Countdown range: 60 minutes Countdown start time setting range: 1 minute to 60 minutes (1-minute increments) Other: Auto switching to elapsed time measurement (up to 60 minutes, 1-second units) when the end of a countdown timer operation is reached 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 Analog: 2 hands (hour, minute (hand moves every 20 seconds)) Digital: Hour, minute, second, pm, month, date, day Accuracy: ±15 seconds per month Approx. battery life: 3 years on SR927W × 2 Size of case: 55 X 51.9 X 18.3 mm Total weight: 70 g LED: Amber