Look out stock racers! Now you can also use the world championship winning technology of the new SXX high-end speed control. Dual ADPCmax Software: Independent adjustment of „Feel“ and „Boost“ for maximum flexibility and highest power. TwinBEC: A true BEC revolution! Constant 6V/3A output with 3.0V to 7.4V batteries. No need for receiver battery for 1S or 4 cells. Revolutionary Internal Temp Check System 3: Allows you to read out the maximum internal temperature for each the speedo and motor. AutoCell System 2 (3.0V to 7.4V input voltage): Fully adjustable cut off system for all types of cells. Extra small size: 30x34x21mm for easy installation in all vehicles. C3 Technology: Revolutionary Copper Core Cooling technology for lowest running temperature available to order!!