M99 Bluetooth V5.2 Single Earhook Business Headphone(Black+Red)

1. Teeth version: V5.2+EDR2. Transmission distance: about 10 meters3. Headphone battery: 350mAh4. Wireless frequency: 2.4GHZ5. Supported protocols: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.36. Charging voltage/current: 5V/1A7. Charging time: about 2 hours8. Speaker impedance: 8mm 32 ohms9. Microphone sensitivity: -42dB10. Headphone weight: about 15.2g11. Headphone size: about 7.4x6x2.2cmFeatures:1. Soft rubber ear hook design, can be adjusted according to different ear types, automatically fit, no feeling to wear, more comfortable2. The direction of the horn can be rotated, and the left and right ears can be worn and used, which is comfortable and firm3. 10-core loudspeaker, HIFI high-fidelity sound4. Intelligent AI noise reduction, HD calling5. Low power consumption 5.2 chip, low latency, more stable6. Two earphones can form a TWS function binaural earphone7. One-key control, easy to use