Ear Muffs, Earmuff Style Over-the-Head, Earmuff Type Rigid, Noise Reduction Rating 30 dB, Dielectric No, Radio Band Type No Radio Band, Intrinsically Safe No, Connection Type Wired, Wired Connection Type 3.5mm Stereo Jack, Cushion Material Foam, Battery Size AAA, Cup Color Black, Auxiliary Input 3.5mm Jack, Includes (2) Battery, 3.5mm Connection Cord, Aux Input, Series Impact Pro, Standards ANSI S3.19-1974, ANSI S12.42 (S3.19), CSA Class A and EN352-, Band Color Black, Band Material Leather