These units are great for outdoor activities, but should not be submerged.

Specifications and Features:
Size: 8.25"X4.25"X2.25"
Weight: 1.03 Lb
Easy open latch
Rubber liner for extra protection doubles as o-ring seal
Automatic Pressure Equalization Valve - balances interior pressure, keeps water out
Stainless steel hardware
Carabiner
Lifetime Guarantee of Excellence
Water resistant, crushproof, and dust proof