Features:
1) Driver unit: Ø50mm
2) Speaker:
a) Impedance: 32 ohms±15%
b) Sensitivity: 100dB±3dB
c) Frequency response: 20 - 20,000Hz
d) Max. power input: 100mW
3) Microphone:
a) Operating voltage: 4.5V
b) Impedance: 2,200 ohms
c) Sensitivity: -58dB±2dB
d) Frequency response: 30 - 16,000Hz
4) Cord length: 2.1m
Multimedia Headphone