features a fashion, light-weight design, with functions of noise isolation and echo cancellation, 10m transmission distance without obstacles, one button with multifunctions, which is compatible with BT enabled devices. It is also with more features like comfortable earcap wearing, convenient earhook fastening, two devices connecting simultaneously and so on. More detailed product information, please refer to the English manual. Features: Noise isolation and echo cancellation technology for perfect sound quality. 10m transmission distance without obstacles. Rechargeable, just need 1.5 hours to be charged, and enough to talk or listen to music for 5-6 hours. With features like comfortable earcap wearing, convenient earhook fastening and two devices connecting simultaneously. Vice earphone for better music listening, spared earcap for replacement. Compatible with BT enabled devices.