Walker's Razor Patriot Electronic Earmuff provides 23 dB of noise reduction with a compact over-the-head design. It features two hi-gain omnidirectional microphones that capture external sounds and broadcast them through full dynamic range HD speakers for clear audio. The earmuff employs sound-activated compression with a quick 0.002-second reaction time to protect your hearing. This model includes two USA flag patches that attach via Velcro on the headband, allowing for customization.