Traxxas 57076-4 Spartan Brushless 36 RTR Vehicle with TQi 2.4GHz FEATURES: Traxxas Stability Management (TSM): Superior tuning algorithms run on high-speed electronic components to ensure arrow-straight acceleration INCLUDES: Traxxas Spartan Deep V Racing Boat, 2.4GHz TQi radio, brushless motor, TSM, Castle engineered ESC, and instructions REQUIRES: AA Cells: Four for transmitter Batteries: Two NiMH 7-cell flat packs with Traxxas connectors Battery Charger: Compatible with selected battery