413758 The SG90 mini servo is lightweight， high-quality and lightning-fast. The servo is designed to work with almost all the radio control systems. It is with excellent performance brings you to another horizon of flight. The SG90 mini servo with gears and parts is perfect for R/C helicopter， plane， car， boat and truck use. - Operating speed (4.8V no load): 0.12sec/60 degrees - Stall torque (4.8V): 2kg/cm - Temperature range: -30 to +60'C - Dead band width: 4usec - Operating voltage: 3.5-8.4 volts