This is a Pelican brand hard clear plastic case for your phone or portable music player, model i1015. Or you can use it to hold small valuables you don't want to get wet at the beach or at the pool.
It has a protective black rubber cushion padding on the inside and clamps shut to create a watertight seal so you can safely have your device by the pool, on the lake or in the shower. Plug your device into the standard headphones cable on the inside and when the case is shut, use the external jack to connect to your speaker.
Case is in nice condition. Outer dimensions are 5.25" x 2.75" x 1.5" so please check to make sure your device will fit before purchase. Will not fit newer, larger smartphones. Hinge has some cracks in the plastic but opens and shuts smoothly. Please see photos for condition of actual item for sale.