Allen® ULTRX™ Bionic E-Muff 22dB NRR Electronic Hearing Protection offers the perfect blend of high-quality sound, comfort, and safety in a single sleek package. Featuring an ANSI S3.19-certified design, these earmuffs come equipped with an onboard dynamic wave compression system and symmetrical hi-gain microphones designed to deliver crystal-clear sound for better on-range communication. The foam-padded headband and padded earcups offer exceptional all-day comfort, and the adjustable design allows for a custom fit. Plus, operating on two AAA batteries (not included), these earmuffs offer an impressive 22dB Noise Reduction Rating (NRR), ensuring maximum comfort and protection while at the range. Includes built-in auxiliary port.