Traxxas Slayer Pro 4X4: 1/10-Scale Nitro-Powered 4WD Short Course Racing Truck with TQi 2.4GHz Radio & TSM, Douglas Powerful TRX 3.3 racing engine, 4WD, and 2-speed transmission deliver incredible acceleration and 50mph top speed New TSM stability management harnesses the power without sacrificing fun Advanced TQi 2.4GHz transmitter and receiver with model memory for fine tuning your speed machines Includes EZ-Start battery and 2-amp DC peak detecting fast charger Officially licensed race replica bodies with ProGraphix factory finish and decals