The Pro hear II is a low-profile in ear sound amplification and suppression in one device. Discrete size reduces distortion and will compress sound over 85 db. with two channels and two memory settings. Setting can be set to 17DB and 22 db. Comply N 50 tips for a great fit and comfort all day wear. Designed to provide a safe level of sound amplification and can be worn with most glasses and hats without interference. The unique compression circuit minimizes impulse sounds and, together with the companion ear plug, reduces the negative effect of muzzle blasts or other loud noises. Maximize your ability to hear better whether at home watching TV taking a walk in the woods or birds taking flight.