Wireless bluetooth headset: 8d surround hifi sound effects. graphene diaphragm, 5.0 low power consumption, large capacity, true wireless bluetooth headset. two connection methods: single/double free to use, single ear listening to enjoy alone, listening to hifi stereo in both ears. 5.0 automatic power-on pairing: built-in cvc8.0 intelligent noise reduction, hd call. led power display: can be used as a mobile phone emergency power supply. function: answer and hang up the phone; play/pause operation. previous and next song switching; siri voice wake up (multi-function button