Description
3. bluetooth version: bluetooth v4.2 + edr 7. bluetooth distance: 10 meters barrier 8. with a2dp / avrcp stereo audio transmission and remote control protocol 9. powerful noise de-noising circuit (active noise reduction) 10. switch between chinese and english (boot does not connect bluetooth state, press the switch 2 times, hear the tone switch successfully) 11. charging time about 1 hour (power indicator charging: red light, full power: red light off (blue light).)
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