Earphone Spec: Driver unit: 27mm mylar speaker Frequency response: 20-20k hz Impedance: 32ohm Sensitivity: 103db s.P.L. At 1 khz Max.Input power: 100mw Microphone: condenser type Polar pattern: omni-directional Sensitivity: odb=1v/pa at 1 khz-68db Cord length: 2.3m More new, hot items are available.