The document summarizes the Apple Watch, a new wearable device released by Apple in 2015. It comes in three models - Apple Watch, Apple Watch Sport, and Apple Watch Edition. The Apple Watch connects to an iPhone and allows users to check the time as well as access other functions like heart rate monitoring and step counting via its touchscreen and digital crown control. While the Sport model sells the most units, the high-priced Edition model generates the largest sales revenue. The Apple Watch requires an iPhone to function and operates other apps and functions through Bluetooth connectivity.