What is the difference between the Nanrobot D4+3.0 and RoadRunner D4+4.0
Although sharing identical framework and internal components, two primary distinctions set apart the RoadRunner D4+4.0 and the Nanrobot D4+3.0 models. The RoadRunner D4+4.0 is furnished with a standard steering damper, provided as part of the purchase package, and features a comprehensive one-year manufacturer's warranty. Conversely, the Nanrobot D4+3.0 does not include a steering damper and is backed by a six-month manufacturer's warranty.