Detector Pro Jolly Rogers Ultimate Headphones for Metal DetectingOur NEW Jolly Rogers Ultimates have added features usually found only on more expensive headphones. Built upon the foundation of our popular original Jolly Rogers headphones, we now introduce the Jolly Rogers Ultimates! You get the same rugged construction and quality as the originals, but now with added features like Dual Volume controls and our famous Limiter Switch that reduces the volume of excessively loud signals. Our special limiter circuit