G-Shock - GA-B2100BNR-1AER

Case size (L× W× H)\n48.5 × 45.4 × 11.9 mm\nWeight\n52 g\nCase and bezel material\nCase / bezel material: Carbon / Resin　\nBand\nResin Band\nConstruction\nShock Resistant\nCarbon Core Guard structure\nWater resistance\n200-meter water resistance\nPower supply and battery life\nTough Solar \nWorld time\nWorld time\n38 time zones (38 cities + coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping\nStopwatch\n1/100-second stopwatch\nMeasuring capacity: \n00'00''00~59'59''99 (for the first 60 minutes)\n1:00'00~23:59'59 (after 60 minutes)\nMeasuring unit: \n1/100 second (for the first 60 minutes)\n1 second (after 60 minutes)\nMeasuring modes: Elapsed time, lap/split time\nTimer\nCountdown timer\nMeasuring unit: 1 second\nCountdown range: 60 minutes\nCountdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments)\nAlarm/hourly time signal\n5 daily alarms\nHourly time signal\nLight\nDouble LED light\nLED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)\nLED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)\nLight color\nLED:White\nCalendar\nFull auto-calendar (to year 2099)\nMute feature\nButton operation tone on/off\nEnergy saving feature\nPower Saving (display goes blank to save power when the watch is left in the dark)\nBattery display/alert\nBattery level indicator\nRun time\nAccuracy\nAccuracy: ±15 seconds per month (with no mobile link function)