Moki Martian Blue ACCHPPOH 3.5mm Connector Supra-aural Popper Headphones - Martian Blue Type: Over the Ear Driver Unit: 40mm Frequency Response: 20Hz–20KHz Input Impedance: 32 ohms Power Supply: Maximum Input Power: 100mW Sensitivity: 110dB S.P.L. at 1KHz Cord Length: 4 ft.