Product Parameters:

• Speaker size:φ10mm
• Impedance:18Ω±10%
• Sensitivity:102±3dB
• Frequency range:20Hz-20KHz
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• Microphone:built-in
• Sensitivity:-38±3dB
• Impedance:2.2KΩ
• Working current:≤100mA
• Connectors:V5.0
• Distance:≤10m
• Battery capacity:70mAh
• Charging Voltage:DC5V
• Working time:9 hours
• Rated power:2mW*2
• Working Voltage:DC3.7V