Workout
Up to 8 hours
Testing conducted by Apple in August 2016 using preproduction Apple Watch Series 1, Apple Watch Series 2, and Apple Watch Edition, each paired with an iPhone; all devices tested with prerelease software. Tested with workout session active, heart rate sensor on, with iPhone. Using the built-in GPS of the Apple Watch Series 2 without iPhone, workout time is up to 5 hours. Battery life varies by use, configuration, and many other factors; actual results will vary.