Industrial 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 Polyurethane PVC Battery Size AAA Cup Color Black Auxiliary Input 3.5mm Jack Includes 3.5mm Cable Series Impact Pro Standards ANSI S3.19-1974 Band Color Black Band Material Textile Battery Chemistry Li-Ion Cable Style Straight