Bluetooth Sports Headset Headphone , Sweatproof Stereo Apt-X technology , Wireless Neckband Earphone Earpiece with Bluetooth Version 4.1 for Most Smart Phones and Bluetooth Devices Technical Ergonomics Design: The ear-in headset won'tfallout When doing exercise. With the high clear stereo sound, you can enjoy wonderful music while running, jogging,climbing, skating, camping, fishing and other outdoor sports Bluetooth 4.1 & hands free : Easy pairing , Bluetooth range is 10 meters (no obstacle). And with the built-in microphone, feel free to make a call with your friends when your hands are busy Extra-long Battery Life: Music play time: more than 8 hours. Talk Time: more than 10 hours. Standby Time: more than 240 hours. Charging time: 2 hours Voice command:Say "yes" or"no" to pick or reject call,add convenience to your life. Call,End,Answer,Redial the last number Voice calling alert:It will ensure that you never miss a call while listening to your favorite tunes