Adding a touch of colour to the classic and iconic stainless-steel bezel and design this timepiece GMB2100AD-2A. There is a fine resin component that has been installed in between the bezel and case, the three-pronged structure allows the shocks to be dispersed with ease to the bands connecting pipes. Delivering all the shock resistance of G-SHOCK in a full-metal timepiece. The case back is constructed with a screw lock structure to ensure a tight seal for extra security. - 49.8 × 44.4 × 12.8mm Case Size - 165g Weight - Stainless Steel Case, Band and Bezel - Solid Band: One-touch 3-fold Clasp - Shock Resistant - 200 Meters Water Resistant - Bluetooth: Connects to a smartphone and automatically adjusts the time - Tough Solar (Solar powered) - Mobile link (Wireless linking using Bluetooth®) - Approximately 300 world time cities - Mineral Glass - Back plate - Screw Lock Back - 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 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. 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.) - 12/24-hour format - Date/month display swapping - Day display (days of the week selectable in six languages) - Regular timekeeping: *Analog: 2 hands