Protable Headphone for iPhone

Speaker: 40mm Neodymium speaker
Frequency range: 20-18kHz
Impedance: 32 ohms +/-10%
Sensitivity: 105 dB+/-10% at 1kHz
Cord length: 1.2M +/-10% PVC single wire
Plgu type: 3.5mm stereo single plug
1C logo printing on the headphone.