1. Chip: BlueCom 2. Bluetooth pairing: K 693. Bluetooth version: V5. 04. Charging port: USB 5. Transmission distance: about 10m 6. Battery capacity: 90mAh 7. Alert tone: English 8. Life time: about 7-8H 9. Play time: about 3-4H 10. Weight: about 51.8gFeatures: 1. Three frequency , large dynamic unit, full and thick HIFI-lev sound experience 2. Not into the ear design, wear , stable , movement is not limited 3. body design, long wear without pain 4. HD microphone, intligent recognition of environmental noise, restore clear human voice 5. Sound conduction technology, through the skull, jaw bone to the sound to the auditory nerve, low-frequency thick, mid-frequency dicate, high-frequency penetration 6. Memory titanium alloy sketon, according to the size of different head adaptable shape, arrary distortion without deformation 7. IPX5 lev waterproof design, fully enclosed sound cavity, to prevent daily sweat and rain infiltration, easy to clean material, simple wipe can 8. No sense of , all-round stereo sound, sound more spatial sense, high-speed connection, low power consumption 9. Widy compatible, support a variety of platforms music 10. Key operation, simple and convenient