Overview1. Second-generation Bluetooth 5.0 chip2. LED smart cool button light3. 9D stereo HIFI brass surround4. Graphene film speaker5. Magnetic pull-out charging box6. Ergonomic design; will not fall when worn on the ear7. Life waterproof; no matter whether it is sweat in the gym or outdoor sports in the rain, it will not ause damage to the headphones.8. Support single/binaural use (left and right headphones have built-in microphones for independent voice calls)9. The ergonomically designed headphone head with soft natural silicone earmuffs will not cause ear pain and other bad conditions even if you wear the headphones for a long time.SpecificationTransmission range: 10MFunctions: power display, voice control, call function, music supportBluetooth protocol: 5.0Channel: stereoUsage: earplugSingle or double ears: double stereoPackage ContentBluetooth Earphone*1