Corelink Sports Handsfree Wireless Bluetooth Headphones Noise Cancelling Earphone with APT-X Running Gym Exercise Sweatproof Headset for iPhone 6, 6 Plus, 5 5C 5S 4 Android (Black) Latest Wireless Bluetooth 4.1 Technology,clear sound, ideal for high quality music while running, jogging, cycling, skating, etc Built-in rechargeable Lithium battery lasts up to 13 hours of talk / play time or 100 hours standby, universally compatible with most Bluetooth-enabled phones. Works with iPhone, iPad, Android and Windows Smartphones tablets and other Bluetooth devices Good noise isolation to create the optimal environment for listening to your favorite tunes, built-in microphone with noise cancellation for clear calling and friends chatting Sweat-proof, light weight and ergonomic design to enhance your comfort; comes with interchangeable earbuds and ear hooks for secure and personal fit when walking or exercising Superbly comfortable rubber adapters and unique design ensure that earphones always stay in place no matter your level of activity. 3 different sizes of ultra-comfortable earbuds ensure you get that perfect fit