Apple Watch 42mm Smartwatch - Assorted Colors (Refurbished)Apple Watch connects to your iPhone via Bluetooth 4. 0 and displays notifications, apps, and more on its display. It can also connect directly to the Internet thanks to 802. 11b g n Wi Fi. The internal battery lasts for up to 18 hours of normal use and is recharged with an included inductive magnetic charger. Features: Apple Watch Dual Core WatchOS 3 Accelerometer Gyroscope Light Sensor Activity Tracker Heart Monitor Microphone and Speaker, Bluetooth