Exterior Dimensions (L x W x D) 5.43" x 4.06" x 2.12" Interior Dimensions (L x W x D) 4.37" x 2.87" x 1.68" Totally watertight, crushproof Rubber liner for extra protection doubles as o-ring seal Pressure Equalization Valve - balances interior pressure, keeps water out Easy open latch Stainless steel hardware Lanyard Lifetime guarantee