... strength, high impact, absolute seal, moisture-proof, dustproof, waterproof. Enclosed ultrahard square sponge . The box has high strength, ... high impact, absolute seal, moisture-proof, dustproof, waterproof. Enclosed ultrahard square sponge is stored valuable equipments ideal ... Lid / net deep inside the box:27mm/66mmUnit weight:1.1KGProtective waterproof grade:IP67 ( enter the water for 30 minutes ...