B-Stock, Pioneer SE-MJ751i On-Ear Hadphone - on-ear, closed-back, 40-30 mm driver diameter (adjustabel through the Bass Tunde knob on the right ear cup), 16 ohms rated impedance, 104 dB efficiency, frequency response: 8 - 28000 Hz, 1000 mW maximum input, removable 1,2m cable with 3,5 mm 4P, gold plated plug, mic and remote control, weight: 200 g (without cable), B-Stock with full warranty, may have slight traces of use