Wireless Bluetooth Headset Headphone Bluetooth 4.1 Stereo Sport Running Earphone Sweatproof HIFI Earbuds With Mic For iphone Features *Portable lightweight and sweat-proof design *Built-in microphone *Built-in rechargeable Li-ion battery *Clear bass resonance,CVC wind noise reduction,and superior sound isolation *Sweat-proof:Effectively prevent sweat and rain interfere with headset operation. *Caller report,line control answer/hang up/rejection/on-off,redial,mute,volume adjustment,Chinese-English shifting,intelligent one-driving-two,music pause/play,up and down song switching . Specifications Bluetooth version:V4.1 Operating distance:Up to 10m (free space) Bluetooth profiles:A2DP, AVRCP, HSP, HFP Talk/music playtime:Approximately 4.5 hours Standby Time:180 hours Charging time:Approximately 2 hours Color :red+black,white+black Compatible For:iPhone/Nokia/HTC/Samsung/LG/Moto/PC/iPad/PSP and other Bluetooth devices. Function:Caller report/line control answer/hang up/rejection/on-off/redial/mute/volume adjustment/Chinese-English shifting/intelligent one-driving-two music pause/plau,up and down song switching Package Included 1xBluetooth 4.1 sports headset 1xUSB charging cable 1xheadphones package 2xsilica gel plug USD 18.45/pieceUSD 15.69/pieceUSD 21.36/pieceUSD 18.45/pieceUSD 10.84-12.63/pieceUSD 13.49/pieceUSD 15.70/pieceUSD 14.27/piece Instruction 1.Press the Switch ON/OFF button for 6-8 seconds without release the button, and the red and blue lights will alternately flashing. 2.And then pair the headphone with your Bluetooth device. 3. Sit back and enjoy music with the freedom to move the headphone wherever you want.