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. * Stylish looks and built-in Bluetooth chip with HiFi Stereo earphones ensures you could enjoy high quality stereo bass sound and good treble. Mini Portable Wireless headsets with built-in microchpone and great Noise Isolation produces clear loud sound, convenient and easy to answer and end the phones. * Bluetooth Version 4.1 supports hands-free Calling, 30 Feet Bluetooth cover range. Compatible with all Smartphones, iPhone, iPad, iPod,Android Phone All Bluetooth devices. Technical specification: 1. Bluetooth ver: 4.1 + EDR , 2. Phone Talk Time: About 3 hrs 3. Music Play Time: About 5 - 6 Hrs. Standby Time: 150 hours 6. Charging Time: 1.5 to 2 hours . 7. Mic: Yes , Package Contents: 1 x Bluetooth headphone 1 x USB Cable . With 3 Pairs of Earbuds ( S / M / L ).