Casio G-shock GM-2100SS-1ADR Original

Case / bezel material: Resin / Stainless steel Resin Band Shock Resistant Mineral Glass 200-meter water resistance Blue ion plated bezel Black ion plated bezel World time 31 time zones (48 cities + coordinated universal time), daylight saving on/off 1/100-second stopwatch Measuring capacity: 00 #39;00 #39; #39;00~59 #39;59 #39; #39;99 (for the first 60 minutes) 1:00 #39;00~23:59 #39;59 (after 60 minutes) Measuring unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) 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 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments) 5 daily alarms Hourly time signal Double LED light LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) 12/24-hour format Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.) Regular timekeeping: Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day) Digital: Hour, minute, second, pm, month, date Button operation tone on/off Full auto-calendar (to year 2099) Accuracy: ±15 seconds per month Approx. battery life: 3 years on SR726W X 2 diameter 44.4 mm