Features: 1. S4 Pro 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, easy to pair.10 meter Bluetooth cover range. Compatible with most Smartphones, iPhone, iPad, iPod,Android Phone All Bluetooth devices.   Technical specification: 1. Bluetooth Version: V4.1 2. Battery capacity: polymer lithium battery 75mAh 3. Talk time: 6h 4. Music time: 4~5h 5. Standby time: 200 hours 6. Charging time: 1-2 hours 7. Mic: Yes Specification: 100% , high quality. Sweatproof and water resistant design(only support life waterproof,cann't support swim and diving. ) Model: S4 Pro Size: 72cm Available color: Black, Blue, Red, Yellow Bluetooth version: V4.1 Support agreement: HFP/HSP/A2DP/AVRCP Wireless Range: 10m Battery capacity: 70mAh Charging time: 1~2 hours Talking time: 4~6 hours Music listen time: 4~6 hours DSP noise reduction. Can be used to answer calls or listen music. Display battery capacity on IOS system device. Perfect compatibility, support most mobile phones with bluetooth device, iPad and desktop computer A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A