The “Killer B’s” have the new style lightweight cups with a new external strain relief on the coiled cord. “Killer B’s” come standard with a 41 position, single volume control, a mode switch that will make them compatible with almost any detector, larger diameter, soft to the touch control knob, color coded toggle switch, and a ¼” angled plug on the end of one of the industries most durable coiled cords. Inside the phones are two 150 ohm speaker elements that are sensitive enough even to pick up the faintest of signals. Killer B’s fit snugly on your head so as not to slip around, but still remain comfortable for all day hunting. Killer B’s come Black and pack a limited lifetime warranty and also come with a satisfaction money back guarantee.