Gomadic clean and dry waterproof protective case suitablefor the Sony Walkman NWZ-E383 / NWZ-E384 / NWZ-E385 to use underwater - Unique Floating Design Specifications: Inner dimensions (Sony Walkman NWZ-E383 / NWZ-E384 / NWZ-E385 specific) weight (Base 3oz. empty) / Cleaning Cloth (included) / Detachable Strap (Yes) Designed to accommodate 87.9 x 44.1 x 10.2 mm - perfect for the Sony Walkman NWZ-E383 / NWZ-E384 / NWZ-E385 Case is easy to operate and can be safely opened and securely closed in seconds Perfect for the beach, waterparks, swimming pools or any place where the elements could potentially damage the Sony Walkman NWZ-E383 / NWZ-E384 / NWZ-E385. Constructed of powerful TPU material, the Gomadic Waterproof Case is 10 times stronger than cheaper vinyl alternatives.