When you're exposed to the elements, keep your valuables and equipment safe from harm. Otter boxes are waterproof, crushproof and float. 1000 Series: pager, car keys, film & batteries, ID, business & credit cards, hotel room keys, small cell phone, medication, and travel sewing kit. Inside Dimensions: 4.83" x 3.68" x 1.65" Outside Dimensions: 3.70" x 2.35" x 1.00"