Main Features:Superlux HD662 EVO Monitoring Headphones is the new evolution of HD662 with new styling and more slender design50mm large-diaphragm speaker unit to reproduce accurate sound and large dynamic, bring you perfect auditory feelingClosed circumaural design provides natural sound, and able to maintain a comfortable feel during prolonged useSupports noise cancelingSelf-adjusting headband provides the best fitCome with two removable earmuffs and audio cables for clean and convenient use Brand: Superlux Model: HD662 EVO Color: Black,White Wearing type: Headband Function: Noise Cancelling Headset type: Dynamic Connectivity : Wired Application: Computer,DJ,Mobile phone,Portable Media Player Plug Type: 3.5mm Driver unit: 50mm Frequency response: 10Hz-30KHz Impedance: 32ohms Sensitivity: 98 dB (S.P.L at 1KHz) Input Power: 200mW Package weight: 0.786 kg Product size (L x W x H): 19.00 x 11.00 x 20.00 cm / 7.48 x 4.33 x 7.87 inches Package size (L x W x H): 24.00 x 12.50 x 24.50 cm / 9.45 x 4.92 x 9.65 inches Package Contents: 1 x Superlux HD662 EVO Monitoring Headphones, 1 x 1m Audio Cable, 1 x 3m Audio Cable, 1 x 6.3mm to 3.5mm Jack Adapter, 1 x Cable Clip, 2 x Earmuff, 1 x Carry Bag, 1 x English and Chinese User Manual