Walker's Game Ear Elite Power Digital Quad Muffs have four channels of digital sound detection technology for game-changing surround-sound amplification. 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 34db. Nano-tech water-repellent coating for worry-free shooting when the weather doesn't cooperate. Two AAA batteries (included). Imported. Color: Black.