Walker’s Razor Slim Electronic Muff Two omni directional microphones Full dynamic range HD speakers for balanced sound Low noise / frequency tuned for natural sound clarity Independent volume controls Walker’s Razor Tactical/Hunting Walkie Talkie Attachment Custom designed to integrate onto the Walkers Razor muffs Has an impressive 2-3 mile range Powered by 2 (AAA) batteries included 12 hours of battery life Bundle Includes: Walker’s Razor Slim Electronic Muff (Black Patriot Version), Walker’s Razor Tactical/Hunting Walkie Talkie Attachment, Walker’s Crosshair Sport Shooting Glasses (Clear) and High-Quality Microfiber Cleaning Cloth Low Profile: These’Razor’ thin muffs were engineered from the ground up with the goal of having the lowest possible profile without compromising the hearing protection and amplification properties of the muff Volume Control: The Walkers Razor Slim Electronic Muffs feature an on/off and volume knob with raised ridges so you can adjust even while wearing gloves Comfort: The Razor series feature Walkers new comfort fit headband for all day shooting Audio Input: The electronic muff features a 3.5mm audio input jack for use with iPods, MP3 players and handheld radios.