This Apple Watch Series 3 features a Space Gray aluminum case with a 38mm size display. It comes 8GB of storage capacity. The smartwatch is compatible with iOS - Apple and features an Altimeter, Accelerometer, Gyroscope, Notifications, and Wireless Charging. The operating system of the watch is Apple Watch OS. The watch is in good working condition and has been tested to ensure full functionality. The watch is also unlocked and ready to use. It does have some wear and light scratches but works well. Shipping with USPS priority mail to the US only. No shipping to US territories. No refunds.