Features: 1. 56S is designed for sports usage , made by waterproof material, ergonomic innovative and waterproof sweatproof design ensures this headset is comfortable and secure for sports ,running ,jogging ,walking ,exercising,etc. 2. Stylish looks and built-in Bluetooth chip with HiFi Stereo earphones ensures you could enjoy high quality stereo bass sound. Mini Portable Wireless headsets with built-in microchpone and great Noise Cancellation produces clear loud sound, convenient and easy to answer and end the phones. 3. Bluetooth Version 4.1 supports hands-free with earhook, it could connect two cellphones simultaneously,easy to pair.10 meter Bluetooth cover range. Compatible with most Smartphones, iPhone, iPad, iPod,Android Phone All Bluetooth devices. Technical specification: 1. Bluetooth ver: 4.1 CSR 2. talk time: 6h 3. music time: 4~5h 5. Standby time: 200 hours 6. charging time: 1.2 hours 7. Mic: Yes Package: 1 x Ubit Bluetooth headphone 1 x USB Cable 1 x Earplug