Bluetooth-compatible 5.3 Connectivity: Ultra-low latency keeps synchronized with audio and video, convenient to keep in contact with your teammates all the time Crystal-Clear Sound: Adopting the intelligent noise reduction design, provides 360-degree stereo sound quality Ear Hook Design: No need to jam the earphones into the ear, so as to better protect the hearing. Unlike in-ear headphones, it allows you to keep in touch and understand the surrounding environment to ensure safety Waterproof Earphones: Designed with waterproof shell to professionally protect the interior from the influence of water and sweat and prolong the service life Specification: Bluetooth-compatible chip: JL6983D Bluetooth-compatible version: Bluetooth-compatible V5.3 Bluetooth-compatible protocols: HFP, SMP, A2DP, AVRCP, SPP, PBAP, SDP Transmission distance: ≥10m (straight line distance) Battery capacity: charging bin: 400mAh; earphone: 80mAh*2 Music playback time: about 14 hours Talk time: about 13 hours Charging time: about 2 hours Charging interface: Type-C, DC 5V 350mA Speaker: 14.2mm (diameter), 32Ω OWS Waterproof level: IPX5 Package included:1 Pair x Earphone1 x Charging Bin1 x Charging Cable1 x English and Chinese User ManualOther things not included