Our Cabelas Quad E-Muff Electronic Earmuffs offer superb sound enhancement, with up to 9x amplification, as well as sound-activated hearing protection. Four hi-gain Omni directional microphones enhance sound directionality, so you can tell the direction from where game is approaching. Independent volume controls allow you to custom set the volume for each ear. The sound activated compression reacts in 0.02 seconds, providing NRR 23 dB hearing protection. Cabelas Quad E-Muff Electronic Earmuffs feature a low-profile design that interferes minimally with gunstocks. Constructed of composite ear cup housing with rubberized coating, and a padded, comfort headband. Operate on 2 AAA batteries (included). Colors: Flat Dark Earth, Grey. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Electronic Earmuffs.