G Shock GMB2100AD 2AD Full Metal Bluetooth watch case colour@Purple this watch exudes confidence and this watch exudes confidence and refinement making it a versatile accessory for the modern adventurer 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: ±15 seconds per month (with no mobile link function) Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents Home city World time city swapping Stopwatch Timer Alarm hourly time signal: 5 daily alarms Hourly time signal Light: Double LED light Calendar: Full auto calendar (to year 2099) Mute feature: Button operation tone on off Energy saving feature: Power Saving (display goes blank to save power when the watch is left in the dark) Battery display alert: Battery level indicator Approx