The new standard in slim hearing protection for the shooting range, these Walker’s Razor Slim Patriot Series Shooting Ear Protection Muffs were built to be sleek, low-profile, and lightweight, while still providing the world-class hearing protection and amplification that Walker’s is known for. With a noise reduction rate (NRR) of 23 dB, these slim hearing muffs let in the noise you need, and none that you don’t. Featuring an audio input jack and recessed volume control knobs, the Patriot Series muffs feature a comfortable headband with a metal wire frame that folds down for easy storage in a bag or vehicle. With full dynamic range HD speakers for clear balanced sound and 2 omnidirectional microphones, these low noise muffs provide natural sound clarity that will be right at home at the shooting range, and will even look good in the process. Protect your hearing at the range with the Walker’s Razor Slim Protection Muff. Includes audio input jack and recessed volume control knobs. Features a comfortable headband with metal wire frame that folds for easy storage. Operates on 2 AAA batteries(not included). Composite housing gives you more effective sound dampening. Independent volume controls give you greater control over the sound. Features full dynamic range HD speakers for clear balanced sound with sound activated compression reaction of 0.02 seconds. Low noise / frequency tuned for natural sound clarity. Dimensions (L x W x H): 8.1 x 4.6 x 10.6 inches. Weight: 0.98 pounds. Ultra low profile ear cups. Full dynamic range HD speakers for clear balanced sound. Low noise/ frequency tuned for natural sound clarity. Single knob volume control. Sound activated compression circuit (SAC). Please note: It is normal for the product to have chromatic aberration due to lighting issues.