SplashDrone 4 is designed to have the best waterproofing technology in the industry. The tough, rigid fuselage of is made out of industrial-grade ABS. Each SplashDrone 4 is factory-sealed to the slightest details and air-pressure tested for our exclusive 100% waterproof guarantee.The waterproof motors and internal electronics are also coated with corrosion-resistant coating adding an extra layer of protection over the already total waterproof design.