Denon AH-C260 Acoustic Luxury In-Ear Headphones (Black) Hybrid material driver housing for the highest fidelity sound reproduction Radial Cascade Damper system reduces cable-transmitted vibration noise Acoustic Optimizer balances sound pressure in front of and behind the diaphragm 9mm diaphragms with Neodymium magnet drive units provide exceptional efficiency 1.3 meter Oxygen Free Copper cable with gold-plated 3.5mm mini plug; Supplied with soft ear pads in three sizes (S, M, L) and a pair of Comply foam ear pads for optimum fit and comfort Connectivity technology: wired