Electronic Shooting Earmuffs Ear Muffs Safety Tactical Gun Sound Amplification Hearing Protection NRR 22dB. Color: 03-desert Brand: OPSMEN MPN: Opsmen-M31-Desert UPC: 600740359316 EAN: 0600740359316. Department? Unisex-adult. Batteries? 2 AAA batteries required. Date First Available? December 11, 2017.