EZRUN 3656 3400kv Waterproof Combo SC 3.1 Most suitable for short course trucks and buggies. 3.2 ESC is completely water-proof and dust-proof. 3.3 Powerful built-in switching mode BEC. 3.4 Excellent start-up, acceleration and linearity features. 3.5 Plenty of programmable items, suitable for various of chassis's, tires and racing tracks. 3.6 Electric brake function, also compatible with mechanical disc-brake system. 3.7 Multiple protection features: Low voltage cut-off protection / Over-heat protection / Throttle signal loss protection. 3.8 Internal timing can be changed easily to make the ESC suitable for various of motors. 3.9 Easily programmed with the SET button, LED Program Box, Multifunction LCD Program Box and USB Link Software. 3.10 Special program port for easily setting the ESC. 3.11 ESC firmware can be updated through the USB adapter in the LCD Program Box. 3.12 Mounting stand for installing the ESC on chassis easily and firmly. 3.13 Top quality motor: Aluminum shell (case) High quality magnets Copper wires of high temperature endurance Good quality bearings 3.14 4 poles motor has very high efficiency and big power output.