Graziella G-Shock Full Metal Watch. GMB2100AD-5A

Case size (L× W× H): 49.8 × 44.4 × 12.8 mmWeight: 165 gCase and bezel material: Stainless steelBand: Stainless Steel BandConstruction: Shock ResistantWater resistance: 200-meter water resistanceTime adjustment: Bluetooth: Connects to a smartphone and automatically adjusts the timePower supply and battery life: Tough Solar (Solar powered)Smartphone Link feature: Mobile link (Wireless linking using Bluetooth®)Apps: CASIO WATCHESApp connectivity feature: Auto time adjustmentGlass: Mineral GlassBack plate: Screw Lock BackCompatible band size: 150 to 205 mmCase size (L× W× H): 49.8 × 44.4 × 12.8 mmWeight: 165 gCase and bezel material: Stainless steelBand: Stainless Steel BandConstruction: Shock ResistantWater resistance: 200-meter water resistanceTime adjustment: Bluetooth: Connects to a smartphone and automatically adjusts the timePower supply and battery life: Tough Solar (Solar powered)Smartphone Link feature: Mobile link (Wireless linking using Bluetooth®)Apps: CASIO WATCHESApp connectivity feature: Auto time adjustmentGlass: Mineral GlassBack plate: Screw Lock BackCompatible band size: 150 to 205 mmOther: NeobriteWorld time: World time 38 time zones (38 cities + coordinated universal time), city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swappingStopwatch: 1/100-second stopwatch Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes) 1:00'00~23:59'59 (after 60 minutes) Measuring unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) Measuring modes: Elapsed time, lap/split timeTimer: Countdown timer Measuring unit: 1 second Countdown range: 60 minutes Countdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments)Alarm/hourly time signal: 5 daily alarmsLight: 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)Light color: LED:WhiteCalendar: Full auto-calendar (to year 2099)Mute feature: Button operation tone on/offEnergy saving feature: Power Saving (display goes blank to save power when the watch is left in the dark)Battery display/alert: Battery level indicatorRun time: Approx. battery operating time: 7 months on rechargeable battery (operation period with normal use without exposure to light after charge) 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)Accuracy: Accuracy: ±15 seconds per month (with no mobile link function)Other features: Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)