Traxxas 57046-4 Red DCB M41 Brushless Catamaran Boat with TQi 2.4 Ghz Radio & TSM, Red Twin-hull catamaran provides incredible stability across waves and smooth water at speeds of 50+mph on 6S LiPo (batteries not included) Advanced TQi 2.4GHz transmitter and receiver with 57046-4 Red memory for fine tuning your speed machines and TSM stability control Adjustable battery trays with hook-and-loop straps accommodate many optional Traxxas NiMH or LiPo batteries Water-cooled, waterproof VXL-6s marine ESC with low-voltage protection and Velineon 540XL Brushless motor with high flow water-cooling jacket Blue-anodized aluminum rudder support, rudder, and drive strut with stainless steel trim tabs and hardware 6S lithium-ion polymer compatible with built-in Low-Voltage Detection