Authentic Brand New G-Shock GA900VB-1A. Case / bezel material: Resin. Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds). 29 time zones (48 cities + coordinated universal time), daylight saving on/off. Home city/World time city swapping. 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). Measuring unit: 1 second. Countdown range: 24 hours. Countdown start time setting range: 1 minute to 24 hours 1-minute increments. 5 daily alarms (with 1 snooze alarm). Full auto-calendar (to year 2099). Analog: 2 hands hour, minute (hand moves every 20 seconds), 1 dial (speed). Accuracy: ±15 seconds per month. Battery life: 7 years on CR2016. Size of Case: 52.8×49.5×16.9mm.