MSA Sordin Supreme Pro X - Standard Edition - Electronic Earmuff with black leatherband, green cups and foam seals fitted Standard Edition - Equipped with foam-earseals MSA Sordin Supreme Pro X - The US military earwear Compresses harmful noise to 82dB. Amplifies safe noise x 4 times Foldable slim design of cups for both left and right handed shooters 600 hours of battery life