This is the brushless electric powered RTR Traxxas Slash 4x4 Ultimate. FEATURES: Velineon brushless power system, 4200mAh battery, charger, painted & trimmed body, oil filled shocks, TQi 2.4GHz High Output radio system w/docking base, 5-ch mini RX, sealed silicone diff REQUIRES: 4 AA TX batteries, track equipment