Lightweight Ergonomic fit 30mm Super bass Speaker Driver Comfortable ear pad for Any outdoor use Compatible with iPhone inline microphone</br>Magnet type: Neodymium?? Driver Unit: 30 mm?? Impedance: 32 ohms?? Sensitivity: 108 dB+/-3dB.</br>Frequency Response: 15Hz~20KHz?? Cord Length: 1.5m?? Cable Type : PVC?? Plug Type : 3.5mm gold plated</br></br>Product Description</br></br>IDANCE FREE10-Watt- Channel Recording Studio Equipment ??  Green</br><br/>http://www.amazon.com/gp/product/B007VK5UW0