Audio Technica Dynamic Headphone ATH-AVC500 Large-diameter 53mm CCAW bobbin winding voice coil driver reproduce High-density wide range. Large headband with Free adjustable head support. Model: closed dynamic type/ Driver: 53mm CCAW bobbin-wound voice coil/ Output sound pressure level :104dB/mW Play frequency band: 10~25,000Hz /Maximum input: 1,800mW/ Impedance 40 Weight (excluding code) :about 270g /Plug :6.3mm standard ,3.5mm mini gold-plated stereo 2-way/ Code :3.0m(One out)