G-Shock GMA-S120RB-1A Details Case Size (L x W x H): 49 × 45.9 × 15.8 mm Weight: 55 g Case and Bezel Material: Resin Band: Resin Band Construction: Shock Resistant, Magnetic Resistant Water Resistance: 200-meter water resistance Power Supply and Battery Life: Approx. battery life: 3 years on CR1220 Exterior Glass: Mineral Glass Compatible Band Size: 135 to 200 mm Other: Neobrite Watch Features World Time: World time, 29 time zones (48 cities + coordinated universal time), daylight saving on/off, home city/world time city swapping Stopwatch: 1/1000-second stopwatch, Measuring capacity: 99:59'59.999'', Measuring modes - Elapsed time, lap time, split time Others: Speed (0 to 1998 units/hour), distance input (0.0 to 99.9) Timer: 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), Other: Auto-repeat Alarm / Hourly Time Signal: 5 daily alarms (with 1 snooze alarm), Hourly time signal Light: LED light, Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow Light Colour: LED Amber Calendar: Full auto-calendar (to year 2099) Accuracy: Accuracy: ±15 seconds per month Other Features: 12/24-hour format, Regular timekeeping - Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (speed) Digital: Hour, minute, second, pm, month, date, day