Philips SHP9500S HiFi Precision Stereo Over-ear Headphones (Black) 50mm neodymium Drivers Deliver Full Spectrum of Sound 1.5m cable gives you freedom of movement for indoor use Comfortable double layered headband cushion, Breathable ear cushion for longer wearing comfort Finishing of connector: Gold-plated, Acoustic System: Open, Magnet type: Neodymium Impedance: 32 ohm, Maximum power input: 200mW, Sensitivity: 101 dB, Speaker diameter: 50mm, Frequency response: 12-35 000Hz