Suppresses gunshot noise while amplifying low-level sounds. Designed for indoor or outdoor use. Adaptive Frequency Response reduces background noise for clearer conversations and hearing of commands. Variable Suppression Time feature provides optimal echo reduction in indoor shooting environments. Two hour auto shut-off. Easy access battery door with tether. Operates on two AA batteries. 3.5mm audio jack compatible with most MP3 players and 2-way radios. Auto ATV & RV. Camping Hiking & Survival. Gun Cleaning & Maintenance. Optics Scopes & Sights. Packs Bags & Organizers. Patio Home & Garden. Pet & Animal Care. Swords Armor & Fantasy. Tools & Home Improvement. 3M Peltor TAC300-OTH Sport Tactical Electronic 300 Hearing Protector Earmuffs. Actual item may differ slightly from picture Please check listing Title/Description for fit, color and size information. View more great items. Walker’s Game Ear GWPRSEMYP Razor Slim Electronic 23dB Typhoon Camo Ear Muffs. Walker’s Game Ear GWPRSEMPATBB Razor Patriot Muff Battle Brown Ear Muff. Walker’s Game Ear GWP-FPM1 Pro Low Profile Passive Earmuffs Hearing Protection. Walker’s Game Ear GWPFPM1FDE Low Pro Dark Earth Muff Folding Passive Earmuffs. This listing is currently undergoing maintenance, we apologise for any inconvenience caused.