The PX 200-IIi immerses you in great Sennheiser sound. The closed speakers provide excellent isolation from outside noises, so you can enjoy a superb listening experience without being disturbed - or disturbing others. Strong neodymium magnets ensure low sound distortion to deliver powerful Sennheiser stereo and boost the quality of all your MP3s.Another big highlight is the smart in-line remote control with microphone that works perfectly with the latest generations of iPod, iPhone, or the iPad. You can control the volume, answer and end calls, use the iPhone voice control function and browse and play your music all from a sleek unit located directly on the cord.The PX 200-IIi is very lightweight, and thanks to the soft leatherette ear pads, comfortable to wear for hours on end. When it's time to stow the headset, the PX 200-IIi's fold and flip design features a unique mechanism that lets you easily fold it up and store it in the supplied pouch. The steel-reinforced headband ensures lasting strength and durability.