The multi-rotor has made the demand over ESC response become even harsher than usual. Our newly special core program for rapid throttle response rate means a more stable hover and swift movement during flight. With the XRotor 3D and Pro series ESC’s new rapid response rate, the ESC can handle difficult and new challenges at ease. The multi-rotor has made the demand over ESC response become even harsher than usual. Our newly special core program for rapid throttle response rate means a more stable hover and swift movement during flight. With the XRotor 3D and Pro series ESC’s new rapid response rate, the ESC can handle difficult and new challenges at ease. A high-performance aluminum folded fin heat sink is combined with the specially designed heat-conductive slotted structure that brings excellent heat-dissipating effect. This is an Extremely Simplified Operational Procedure. HobbyWing XRotor PRO 40A Features: Special Core Program for Rapid Throttle Response Driving Efficiency Optimization(DEO) Technology for Better Performance Open Cooling Fin Spec Check: Cont./Peak Current: 40A/60A LiPo Cells: 3-6S LiPo BEC Output: No Input Wires: Red-16AWG-500mm*1/Black-16AWG-500mm*1 Output Wires: Black-14AWG-75mm*3 Input Connectors: No Output Connectors: 3.5mm Gold Connectors (Female) Size: 66.0x21.8x11.0mm Weight: 50g (HW30902042)