Precisely balanced response provides reference-monitor accuracy Professional drivers 40mm drivers for extended 16Hz - 20kHz frequency response Over-ear design and lightweight construction for exceptional comfort Closed-back design maximizes isolation Self-adjusting headband ensures perfect fit Professional build quality 3.5mm (1/8") plug with 6.3mm (1/4") screw-on adapter Comes in one colour - Black Warranty : 1year #akg #k72 #overtheear #treoo #audiophile #audio #headphone #earphone