ABCShopUSA Over-Ear [45mm Dynamic Driver] Professional Studio Monitor Headphones [HP3BK] Large 45mm dynamic drivers that deliver crystal clear mids, highs and low hitting bass Over-ear headphones suitable for professional monitoring and listening to music for longer periods Durable screw-on jack to connect perfectly when working in the studio Adjustable headband features to fit any head size Protein leather and memory foam headband making you feel at ease wearing it.