Sunvito Bluetooth 4.0 Stereo Headphones Sweatproof Sports Running Gym Exercise Headsets Earpiece with Microphone & for iPhone 6s / 6 Plus / 5, Galaxy Note 4 S6 and Other Cellphones(Blue-Black) Bluetooth version:V4.0,with CSR8635 chip and apt-X ensure high quality lossless sound.Enjoy wonderful musics. Sweat Proof Design: Awesome portable and lightweight wireless headset can be stay in your ears comfortablely. The material of the headset is in a sweat design, but not dip it in the water. Designed for all users - Ideal wireless ear buds for the Gym, Hiking, Cycling, Jogging for simple casual listing without those annoying cables. Long working and Standby Time: Up to 5-6 hours of Talk/Playing Time and 120-150 hours Standby Time. Most Comfortable Wearing: Ergonomic in-ear design with medical grade silicone ear gels and stabilizers, providing you the most comfortable wearing in your ears for full day use and never fall off when workouts.