Walker's Game Ear Alpha 360 Muff features two volume controls that adjust the four wind-resistant, high-frequency multidirectional microphones that provide up to 9x hearing enhancement. Sound-Activated Compression protects your hearing with a noise reduction rating of 24db. Antimicrobial ear pads add to the comfort of this hearing muff. Combo includes a pair of 99% UVA/UVB sport glasses featuring four interchangeable polycarbonate lenses with pitch adjustment. Hearing muffs run on two AAA batteries (included). Colour: Black.