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 protection—without 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.