Description Features: 1, 9D surround sound, 5.1 dual-ear chip, large capacity, true wireless BT headset 2, Graphene bass diaphragm, HIFI high-frequency technology, 10MM dynamic speaker unit 3, Two connection methods: single / double free to use, single ear listening to enjoy alone, listening to HiFi stereo in both ears. 4, 5.1 automatic boot pairing, built-in active noise reduction IC, HD call. 5, 5.1 BT game without delay, the electric cabin can be used as a mobile phone bracket mobile phone emergency power supply, multi-function use. You can charge your phone using the earbud charger!! Specifications Compatible: Universal Communication: Wireless Style: In-Ear Type: Bluetooth Headset Charging box: 2000mAh Color: black Single headset: 50mAh BT Version: BT 5.1 Working distance: 10m - If you have any questions please let us know Thank you