Walker's Game Ear Elite Power Muffs have two wind-resistant, high-frequency stereo microphones for unparalleled sound perception. Customize to your specific hearing abilities with the Adjustable Frequency Tuning and independent volume controls. Nine times hearing enhancement amplifies sounds up to 50db, so you hear every leaf crunch. When discharging your firearm, the Sound-Activated Compression reacts in 32 milliseconds to protect your hearing with a noise reduction rating of 24db. Nano-tech water-repellent coating for worry-free shooting when the weather doesn't cooperate. Antimicrobial ear pads reduce the growth of odor-causing bacteria. Two AAA batteries (included). Imported.