Blackzebra gedc Bluetooth Headphones, Sport Earphones Latest Wireless Bluetooth 4.1 Technology with A2DP stereo music and AptX pure, clear sound, ideal for high quality music while running, jogging, cycling, skating, etc Adopt the most advanced bluetooth CVC6.0 noise cancellation that creates 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 can enhance comfort when exercising, running, climbing, driving, skating,camping, fishing and other outdoor sports.interchangeable earbuds and ear hooks included. Built-in rechargeable 80mA battery lasts close to 5h to 6h talking time,universally compatible with most Bluetooth-enabled phones,such as iPhone, iPad, Android and Windows Smartphones tablets and other Bluetooth devices. Package Content: Blackzebra HP-S2 Bluetooth Headset, USB Charging Cable, 6 x Ear buds (large, medium and small), 6 x Ear hooks (large, medium and small), User manual & Blackzebra Happy Unhappy Card