Sennheiser Momentum On-Ear Headphone - Black Compact closed back, over-ear design isolates ambient noise to maximize musical enjoyment..Connectivity Technology: Wired Headband and layered foam ear pads are covered with supersoft, breathable and durable Alcantara providing comfort and a perfect fit. 18-ohm operating impedance produces outstanding bass response, dynamics and overall output level with portable audio devices One of the two included connection cables features a metal in-line three button control and microphone supporting Apple devices like iPod, iPad and iPhone. 2 year global warranty