Features:1. Automatically find the center position.2. With high-frequency drive system.3. With the function of overheating guard, low voltage guard, low-resistance field effect tube.4. With forward and backward functions for car and boat.5. Suitable for RC car and boats.Specification:Item Type: RC Accessory Current: Forward 320A, Backward 160A, Brake 270ABattery Supported: For Ni-MH, Ni-Cd Battery: 4 - 6 groups ( 4.8 V ~ 7.2 V )For Li Battery: 3 groups( 7.4 V - 11.1 V ) BEC Output: 5.6V, 2A(supply electricity for receivers, servos)Size: Approx. 43 * 29 * 27mm / 1.69 * 1.14 * 1.06inchWeight: Approx. 45gInstructions:1.Connect to the power battery correctly, the red wires at both ends of this wiring boards are positive, black ones are negative.(or connect to astandard DC battery plug male plug / T plug / banana plug )2. The output red and black lines of ESC need to be connected to the red and black lines of car motor.3. Open the power switch of the ESC, then the motor produces a "beep" sound, and then turn on the transmitter power.Package Include:1 x 320A Brushed Electronic Speed Controller.