Brand: ROCHE Style: in earphone Usage: MP3/Phone/Computer Receiver: Φ10.0mm Impedance: 16 Ω Sensitivity: 105dB+/-3dB at 1KHz Frequency Response: 20-20kHz Cable Length: 1.2m Plug Type:Straight 3.5mm Golden Material: Metal Mic: YES Voice control: NO Accessories: Ear-hook， Clips， Noise-isolating Plugs， Pouch