RioRand RRLSKJAARQQTQQIVBNP Waterproof DC Car Power Converter Step Down Buck Voltage Regulator (60W/5A 17-35V 24V to 12V) Powered by RioRand Advanced Technology coreless motor, Dead Band Width : 2 usec Stall Torque : 1.5kg/cm at 4.8V Voltage : 3.0 - 7.2Volts Dimension : 22mm x 12mm x 29mm