The wasp has every bell and whistle offered by Killer B’s. It has dual 41 position volume controls, high output 150 ohms speaker elements, external strain relief, larger diameter, soft to the touch control knobs, locking color coded toggles, a switch-able limiter circuit, lightweight and comfortable cups, switchable mode switch making it compatible with most detectors and a high quality coiled cord with a ¼” angled jack. The ''Wasp'' by Killer B’s come in your choice of Green or Black and pack a limited lifetime warranty and also come with a satisfaction money back guarantee. Yes that’s correct, if you don’t like them, pack them back up and ship them back, we will gladly refund your money.