Featuring bold, distressed, patriotic graphics, the Walker's Razor Freedom Slim Electronic Hearing Protection is a streamlined digital hearing protection device, designed to fit over the ear for superior protectionwithout affecting your cheek weld for improved comfort. Two omnidirectional microphones amplify low-level sounds for enhanced situational awareness, while Sound Activated Compression technology automatically suppresses harmful sounds to better protect your hearing. Operating on two AAA batteries (included), these digital earmuffs offer a Noise Reduction Rating (NRR) of 23dB and features an auto-shutoff feature for lasting battery life. Better yet, these earmuffs are equipped with a 3.5mm audio input jack, allowing you to connect external audio devices for added versatility. The original Razor Slim electronic ear muffs feature an ultra-low profile compact design and are available in a variety of color options. Full dynamic range HD speakers provide clear & balanced sound. Sound-activated noise compression has a 0.02 second reaction time to protect your hearing no matter the situation. Razor sets the standard for electronic hearing protection. Compact Electronic Hearing Protection With its ultra-compact design, the Razor Slim electronic muffs offer superior hearing protection in a low-profile design. Two hi-gain omnidirectional microphones pick up outside noise and broadcast it through full dynamic range HD speakers for an ultra-clear, balanced sound. Sound activated compression has a blazing fast 0.002 second reaction time to ensure your hearing is always protected. Available in a variety of color options, the Razor Slim electronic ear muffs are priced right and packed full of innovation. 2 hi-gain omnidirectional microphones Full Dynamic Range HD Speakers for clear & balanced sound Low Noise / Frequency tuned for natural sound clarity Independent Volume Controls Sound dampening composite housing Sound Activated Compression 0.02 second reaction time NRR 23 DB Audio Input Jack Recessed Volume Control Knobs Comfortable headband w/a metal wire frame External Battery Door Operates on 2 AAA batteries Included.