Features: Unique neck-strap light weight design for easy carrying and all day comfort. Imported British 4.1BT chip; IDSP noise reduction space; IIPX4 class sports anti-sweat; Hidden wire, experience more comfortable wearing feeling; Not only music, BT phone still high-definition; High-quality polymer battery, strong life.4hours. Battery capacity: 8MAH. Charge time: 1-2 hours, support the song; Easy magnetic earphone storage; Support to cable, support agreement:. HFP HSP A2DP AVECP, DSP Noise Reduction functions: answer, end, reject, forwarding, call waiting , redial, mute, volume control, multi-point connection, music pause, play, cut down song song, voice reporting; Applications: Supports any, IPAD tablet, desktop computer with a BT device class phones. Not carrying a BT-enabled desktop computers can be used with a BT adapter.