Cabelas S.T.R. 9X Electronic Muffs amplify sounds to 50dB, nine times the power of normal hearing, meaning youll be able to hear all creatures great and small as they move about. Four wind-resistant, high-frequency stereo microphones inside the unique, stylized ear cups provide precise sound directionality, while two independent, low-profile volume-control knobs enable you to regulate noise levels to your preference. Sound-activated compression reduces loud sounds, like muzzle blasts, to safe levels for a 24dB NRR. Soft padded headband. Folds for convenient transport and storage. Powered by two AAA batteries (included). Color: Black. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Electronic Earmuffs.