On-Ear Headphone closed system. copper cable OFC interchangeably. 40mm dynamic speakers with neodymium magnet, nylon membranes damped and copper coated aluminum coils. Earphones sealed for optimum isolation from ambient noise and bearing in self-modeling removable magnetically foam. Band adjustable bow. foldable earcups. Built with high-strength materials. System with wired remote control / microphone compatible with iPod / iPhone / iPad. Belkin Carrying skin and Jack 3.5mm adapter> 6.3mm included. genuine leather trim and metal. Weight: 195gr.