In-Ear Stereo Headphones, Connect via Class 1 Bluetooth with your device for wireless workout freedom, includes Micro USB charging cable. Up to 12 hours of battery life to power through multiple workouts, With Fast Fuel, a 5-minute charge gives you 1 hour of playback when battery is low, Sweat and water resistance to handle tough training. Take calls, control your music and activate Siri with RemoteTalk, Rechargeable Lithium-Ion battery. Simultaneously connect to your Apple Watch, iPad and Mac (requires iCloud account and macOS Sierra, iOS 10, or watchOS 3). Flexible, secure-fit earhooks maximize comfort and stability, Dynamic, high-performance sound pushes you to the next level.