G Shock GMB2100AD 2AD Full Metal Bluetooth watch case colour@Purple Casio CA53WF 4B Digital Watch Casio CA53WF 4B Digital Watch making it a versatile accessory for the modern adventurer 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) 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