The Casio G-Shock GBA-900-1AER G-Squad series smartwatch combines a round shaped resin case and black resin strap with breathable vent holes and a traditional buckle. It has a black dual display dial which is protected beneath mineral crystal glass. Power is generated by a quartz movement which lasts for approximately 2 years. This model also has an impressive water resistance of up to 200 metres. Accuracy +/- 15 seconds per month Airplane mode Radio wave signals can be disabled when flying or in a medical facility. Alarm function Automatic calendar Once set, the automatic calendar always displays the correct date. Bluetooth® Connectivity Connect to compatible smartphones for a range of features Countdown timer Display illumination Auto Light: The watch dial will illuminate automatically when you tilt your wrist towards you. Once activated, this feature will automatically deactivate after six hours. LED light selectable illumination duration (1.5 seconds or 3 seconds) Dual time Simultaneous display of the current time in two different time zones. Home city time swapping Hand moving function With a push of a button, hands move away to permit free visibility. Resin band Synthetic resin is the ideal material for wrist straps thanks to its extremely durable and flexible properties. Shock-resistant Shock-resistant construction protects against impact and vibration. Stopwatch function - Total Weight 61g - Case Depth 17mm - Case Width 49mm - Watch Movement Quartz - Water Resistance 200 metres