Sennheiser Momentum Headphone - Brown Closed back, over-ear design isolates ambient noise to maximize musical enjoyment.. Connectivity Technology: Wired Premium leather ear pads and headband deliver softness and breathability for extreme comfort during long listening sessions Precision metal ear cups and slider provide durability and enhance sonic performance 18-ohm operating impedance produces outstanding dynamics and overall output level with portable audio devices Luxurious hard carry case, standard and "i" device cables, and 1/4" stereo adapter included. Two-year warranty.