Hobbywing SeaKing 180A-V3 Brushless Marine ESC Waterproof Speed Control. The waterproof design (Rates as IP 67) allows this Seaking-180A-V3 ESC to work in water without any extra precautions, so the speed controller is applicable for all the RC boats with the length less than 130cm (51.18). Besides this ESC adopted the Copper Bar Heat Conduction […]