Semi-open diffuse-field studio headphone
250 ohms impedance
Comfortable fit due to rugged, adjustable, soft padded (leatherette) headband construction
Robust, easy serviceable construction as all parts are replaceable
Velour, circumaural and replaceable ear pads
3.0 m (9.8 ft.) coiled cable (single sided)
These are a fantastic set of cans, extremely well reviewed: http://www.head-fi.org/products/beyerdynamic-dt-880-pro-250-ohm-semi-open-reference-headphone/reviews/16121
I've been using these for over a year now and they still feel completely new, highly recommended at this price.