Hobbywing Seaking 30/60/130/180a Brushless ESC Motors Waterproof Boat Marine. Seaking 30A V3 Brushless ESC 30302060. Excellent waterproof design (rates as IP 67) allows this ESC to work in water without any extra precautions. High quality components have very strong over-current withstanding capabilities. High-efficiency water cooling system can easily dissipate the heat produced in operation under high load. The special firmware designed for RC boats can give an acceleration with more punch and the sailing more stable. Multiple protections such as low-voltage cutoff protection, thermal protection and throttle signal loss protection, make the ESC more reliable. BEC Type / BEC Output. No needed Use a Rx wire on the ESC can be used to connect the LED program box with ESC. 2.0 / 4.0mm. 54.5X28.3X18.7mm (Include the Water Cooling Pipe) 41g. Seaking 60A V3.1 Brushless ESC 30302200. SeaKing-60A-V3.1 / SKU:30302200. 2-3S Lipo / 5-9 NiMiH. Liner Mode / 6V/3A. 60.5X38.5X25.6mm (Include the Water Cooling Pipe) 93g. Seaking 130A V3 Brushless ESC 30301200. Patented Copper Heat Conduction technology and high-efficiency water cooling system can easily dissipate the heat produced in operation under high load. The special firmware designed for RC boats can make the acceleration punchier and the sailing more stable. The external Programming Port can connect to the LED Program card for easily setting the parameters of the ESC. Multiple protections like low-voltage cutoff protection, thermal protection and throttle signal loss protection, make the ESC more reliable. The anti-spark circuit attached on the input wires eliminates the eletrospark created when connecting the ESC to battery. Dual water-cooling tubes make the heat distribution on the heat-sink more proportional. Set up, Trouble shotting becomes very simple. 2.7 / 5.0mm. 88X58X23mm (Include the Water Cooling Pipe) 182g. Seaking 180A V3 Brushless ESC 30302400. The external Programming Port can connect to the LED Program Box for easily setting the parameters of the ESC. 3.0 / 5.4mm. 72X48X36.6mm (Include the Water Cooling Pipe) 207g.