Negotiable

                                            Product model: M28
Bluetooth version: V5.1
Battery life: about 5 hours
Standby time: about 180 hours
Impedance: 320
Rated input: 5V
Frequency response: 20Hz 20KHz
Transmission distance: about 10 m
Lighting ffect: colorful atmosphere light
Control method: smart Press
Noise reduction version: CVC8.0
Headset battery:50mAh
Charging case battery:2000mAh
Colour: black
Material: ABS
Size: 12 x 7.3 x 4.7CM
Speaker size: 8mm                                    

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