(6) Testing conducted by Apple in August 2016 using preproduction AirPods units and software paired with preproduction iPhone 7 units and software. Volume was set to 50%. Testing consisted of full AirPods battery discharge with a cellular phone call until the first AirPod stopped playing call audio. The drained AirPods were charged for 30 minutes, then the cellular phone call was continued until the first AirPod stopped playing call audio. This cycle was repeated until both the AirPods and the Charging Case were fully discharged. Battery life depends on device settings, usage, and many other factors.