New Upgraded 5.1 Chip: stable full-core upgrade, compared with the old version of Bluetooth 5.0, the transmission distance is greatly improved, the signal stability and anti-interference ability are enhanced, and the standby power consumption is reduced. IPX7 waterproof and sweatproof: You can also wear it in the bath, and the multi-process design of the head and body effectively prevents sweat from damaging the components. Product features: play pause (1 tap), answer and hang up (one tap), summon Siri (long press for 1 second), volume reduction (press 3 times), switch to the previous song (tap 2 times) , Power on/off (long press for 5 seconds).