Philips SHL9300/28 Headband Headphone (Black) (Discontinued by Manufacturer) Ultra Lightweight, Foldable Headband Headphones For Superior Sound Perfect Fit, Rich Bass Superb Sound Experience The 40 mm speaker driver is made of a composite mylar material for a highly sensitive yet powerful element that delivers sound without audible distortion. The newly innovated FloatingCushion design allows for full multi-directional, auto-adjustment of the cushions, without the need of the traditional C-hinge construction. The ideal 1.2m cable length to give you the freedom to put your audio device where you want. Rest assured that the precious metal gold finishing on the plug will give you a more reliable connection for better quality audio. Neodynium is the best material for producing a strong magnetic field for greater sensitivity in a voice coil, better bass response and higher overall sound quality.