‎- Perfect performance of noise reduction‎,‎ isolated from background noise for zero distortion sound quality‎- Support hands‎-free talking‎,‎ stereo music output‎- Smart multi‎-point connecting‎,‎ support two devices connecting at the same time‎- Number notification‎,‎ avoiding missing important calls‎- Anti‎-lost function‎,‎ it will alert you when your phone beyond the effective distance‎- Lightweight‎,‎ fashionable‎,‎ elegant and practical‎- Built‎-in 130mAh li‎-ion battery