Howard Leight by Protective Industrial Products Impact® Sport Folding Electronic Earmuffs with 22 dB NRR are ideally designed for giving one of the best ear protection for shooting and is able to block all noise above 82 dB automatically for more safety. Highly reliable earmuffs use 2-AAA batteries for longer lifespan and come with an adjustable headband for comfortable wear. High quality earmuffs are able to connect to an audio player or radio through external audio input and are designed to meet the required standards for earmuffs.