Willful Stereo Bluetooth Sports Headset In Era Earphone Lightweight Sweatproof for Sports Running Gym Hiking for iPhone 6 6 Plus 5S 5C Samsung Galaxy Note 5 4 3 S6 S5 S4 Black Bluetooth V4.0, Compatible with all standard Bluetooth-enabled mobile phone, media devices. Function list:Multipairing,voice control,microphone,play/pause/pre/next music,redial last number,answer/end/refuse phone call Ergonomically designed, compact and lightweight in-ear earbuds for comfortable wear The behind-the-neck style prevents it from hitting the ground even if they fall out of your ears,firmly attached earbuds offer secure fit,ideal wireless earbuds for the gym, hiking, cycling, climbing Built-in rechargeable battery, lasts up to 5 hours talking time,4 hours music time and 160 hours standby time