Monitor Headphones I is not quite what I used as a headset and works very well It lacks a bit of info then: Transducers: 40 mm Magnet: Neodymium Coil: CCAW (copper clad aluminum) Frequency Response: 15 Hz 22,000 Maximum power input: 1,300 mW at 1kHz Sensitivity: 96 dB Impedance: 47 ohms Cable: 3.0 m, left Weight: 220 g, without cable and connector Included accessories: 6.3 mm screw adapter, carrying pouch