- 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 (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 - Boasts a noise reduction rating of 23 dB with 2 omnidirectional microphones - Low noise/frequency tuned for natural sound clarity