King Jim Digital Ear Muffler MM1000 White King Jim Digital Ear Muffler MM1000 White Unused Model Number: MM1000 White Noise Cancellation Level: Maximum -20dB (Based on our unique measurement method) External Dimensions: W64 x H14 x D64mm (Excluding earphones and cord stopper) Weight: Approximately 33g (Excluding batteries, including cord) Power Supply: 1 x AAA alkaline dry cell battery or 1 x AAA Eneloop battery (sold separately) Battery Life: Approximately 100 hours when using alkaline batteries, approximately 60 hours when using Eneloop batteries (Varies depending on usage conditions) Cord Length: 85cm (Y-type) * The length of the left and right cords is the same. Set Contents: "Digital Ear Muffler" main unit, pouch, ear tips (XS, S, M, L), instruction manual