iFrogz IF-SKP-GRN Audio Skip Headphones - Green Crisp Sound and lightweight design - Cord Length: 1.2 m Adjustable band for every head size Driver Unit: 30 mm neodymium - Impedance: 32 ohms Sensitivity: 105 dB +/- 3 dB at 1 kHz - Frequency Response: 20 Hz to 20 kHz Authentic iFrogz products and warrantees on iFrogz products