Parameters:

Model: ZH01

Speaker impedance: 16 ohm microphone

Sensitivity: -42 +/- 3dB

Battery specification: 300 mAh

Operating temperature: -10 ~ 55 degrees Celsius

Power: DC5V

Material: PC + ABS (wire container) / PP (headband)

Play time: 7 ~ 8h

Charging time: 1 ~ 2h

Standby time: 500h