【NEW】BOROFONE BW93 TWS Wireless Earphone ANC Noise Reduction Bluetooth Headset BT5.4 HIFI Stereo Headphones 300mAh Super Long Battery Life For All Smartphones Universal

Borofone. 1. Bluetooth specifications Bluetooth V5.4 JELLI AC7003 Support protocol HSP HFP A2DP AVRCP. 2. Transmission range: 10 meters Transmission frequency: 2402-2480MHZ. 3. Audio decoding protocol: SBC. 4. Maximum RF output power EDR): 4dBm Modulation type EDR): GFSK, 4-DQPSK. 5. Speaker: 13MM Impedance: 32 ±15%. 6. Frequency response: 20~20000Hz. 7. Sensitivity: 98db±3db. 8. Charging voltage DC5V headphone charging time is about 1 hour Charging time is about 1.5 hours. 9. Charging box battery capacity: 300mAh battery capacity of left and right ears 30mAh. 10. Call time 4 hours 4 hours music time 80 volume standby time 200 hours. 11. Net weight: 57.6g including charging chamber Bare metal weight: 3.7g single ear). Size: 60.645.221.7mm. 12. Product material: ABS. 13. Supports master-slave switching, supports noise reduction and transparency functions, up and down curve switching, summoning Sir, binaural calls, and touch operation functions

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