Highlights: 1.SWEATPROOF - S4 Bluetooth Earphones was 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.BUILT-IN MIC - 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 4.1 - 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. 4.LIGHT WEIGHT - Light weight and coming with interchangeable ear buds and hooks, the headset will secure fit behind your ears and rest,Secure Ear Hooks Design with Cable Clips. Specification: Size: 72 cm Available color: Black, Blue, Red, Yellow Bluetooth version: V4.1 Support agreement: HFP/HSP/A2DP/AVRCP Wireless Range: 10 m Battery capacity: 70 mAh Charging time: About 1~2 hours Talking time: About 6 hours Music listen time: About 4~6 hours Net Weight: About 10 g Fit for:universal bluetooth earphone for most mobile phones Package included: 1 X S4 Bluetooth headset 1 X Micro USB cable 1 X user manual