Features: 1. This 320A brushed motor ESC can be used for RC car/boat. 2. It can provide 320A forward or 160A back ward instantaneous motor current when connected to motor. 3. This Brushed Motor Speed Controller with 3S (12V), suitable for no more than 380 motor. Using 2S (8.4V), suitable for no more than 540 motor. 4. High-frequency drive system, quick response. 5. Automatically fine the center position of the accelerator. Specification: Ni-MH, Ni-Cd 4 - 6 group ( 4.8 V ~ 7.2 V ); Lithium battery 3 groups ( 7.4 V - 11.1 V ) BEC output: voltage 5.6 V, current 2 A ( supply electricity for receivers, servos ) Size: Approx. 43*29*27mm/1.7*1.1*1.1in Package List: 1 * ESC