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Bluetooth version: V5.0
Power input: DC 5V
Power supply capacity: 3.7V/35mAh
Working time: 4-5 hours
Charging time: 40-50 minutes
Support Agreement: HFP1.7, HSP1.2, A2D
P1.3, AVRCP1.6, SPP1.2, PBAP1.0
Sensitivity: 120 ± 3dB
Frequency response: 20-20000Hz
Impedance: 320