Over Ear, Open Back Audiophile Design Large, 50mm Pure Beryllium Driver for musical response Lambskin covered earpads for supreme comfort, Leather covered band for durability Frequency range of 18Hz-22kHz +/-3dB for accurate response Sensitivity 97dB/1mW, Max SPL 107dB 2m detachable cord with 3.5mm-6.3mm adaptor Weight 340g Leather Hard Case and soft travel bag included