Specification:
1) Speaker: 30MM
2) Impedance: 32OHM +/-15%
3) Cord Length: 1.2M+/-10%
4) Sensitivity: 90dB+/-5dB
5) Frequency response: 20-20KHz
6) Plug: 3.5MM
7) Max input power:30mW

Light, comfort your ears, to enjoy Music