50mm neodymium Drivers Deliver Full Spectrum of Soundn3m cable gives you freedom of movement for indoor usenComfortable double layered headband cushion, Breathable ear cushion for longer wearing comfortnFinishing of connector: Gold-plated, Acoustic System: Open, Magnet type: NeodymiumnImpedance: 32 ohm, Maximum power input: 200mW, Sensitivity: 101 dB, Speaker diameter: 50mm, Frequency response: 12-35 000HznPhilips SHP9500 HiFi Precision Stereo Over-ear Headphones (Black)