1. Programme: BlueTrum 5656022. Bluetooth version: V5. 43. Support protocol: AAC/SBC 4. Communication distance: about 10m 5. Use time: about 6-8h 6. capacity: earphone: 40mAh; charging compartment: 300mAh 7. Speaker: F14.2 titanium alloy membrane speaker 8. Craftsmanship: rubber oil + plating 9. Charging interface: Type-C 10. Applicable: playback devices with Bluetooth functionFeatures: 1. and comfortable, long wearing not tired ears 2. Comfortable swiv astic earhooks, not picky about ear shape, 90-degree adjustable swiv angle design, easy to find the right wearing angle 3. Open hearing, surging natural, sound immersive 4. High-resolution driver unit, HIFI sound fid, three-frequency d 5. Directional sound transmission technology, privacy protection, no sound leakage 6. AI algorithm for call noise reduction, enhanced noise reduction technology, dual microphone directional radio, comfortable and clear communication 7. Long standby life, LED power digital display, total life about 60 hours 8. High-speed Bluetooth 5.4, fast connection, no sense of , lossless transmission 9. Low latency game, audio and video synchronisation 10. Bluetooth can be connected, compatible with all kinds of devices 11. Intligent touch operation, easy to manage the music