1. Waterproof, moisture-proof and dust-proof: with black silicone sealing strip, 100% water-repellent, can not be immersed in water, if the water pressure is too strong, it will leak water, adapt to any medium and small rainy weather environment, keep the interior dry, and float on the water . 2. Shockproof: Covered with 3mm PE shockproof lining, which effectively protects the items in the box from impact damage. 3. Strength: high-strength composite material to ensure strength.