Watertight, crushproof, and dustproof. Features a rubber liner for added protection and doubles as O-ring seal. Opens easily via a throw latch. Supplied with a carabiner for easy and convenient travel and storage. Able to be submerged under 1 meter of water for up to 30 minutes in accordance with IP67 testing parameters. Automatic Pressure Equalization Valve - balances interior pressure and keeps water out.