The Spektrum SRS4210 and its patent-pending AVC technology can make any RC car, truck or buggy drive like its on rails. Using sensors and exclusive software, AVC technology calculates a vehicle’s attitude many times per second and makes instantaneous corrections to steering and throttle so it stays precisely on the trajectory that you command. The amount of steering and throttle stability provided can be adjusted to suit your skill level or driving style and best of all, driving with AVC technology feels completely natural. There is no lag in response or limits on your control. You simply feel like you’re driving a finely tuned vehicle that handles beautifully at every speed.