WeSC Checked Bongo Headphone (Ribbon Red) (Discontinued by Manufacturer) Type: 40 MM Power Drivers 1Khz Sensitivity: 120 dB Impedance: 32 Ohms Frequency Range: 20-20 001 Hz Plug: Gold-Plated 3.5 MM Stereo & Cord: 0.5 M + 1.0 M Extension, PVC Cord