Negotiable

                                            Bluetooth version: Bluetooth V5.0+EDR
Bluetooth use band: 2.4GHz
Impedance: 32ohm
Microphone sensitivity: 107DB SPL +/-3DB
Wireless frequency: 20HZ-20KHZ
Battery capacity: 300mAh
Charging voltage: 3.3-4.2V
Power: 25MW
Transmission distance:15M
Support protocols: A2DP, HFP, HSP, AVRCP
Playing time: about 2-3 hours
Charging Time: About 1 hour
Standby time: about 72 hours
Waterproof rating: IPX5                                    

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