1. PCB design is more reasonable, using square copper bars instead of cylindrical copper bars to reduce heat generation. Increased wiring pads allow more heat to be dissipated through the wires. 2. Fine. 3. PCB technology upgraded: Process includes resin plug holes, tray holes, and half holes on both sides of the control board. Upgraded power board. 4. Overall design is optimized with heatsink directly contacting the MOSFET for maximum heat dissipation. Item Name: Brushless ESC Working Voltage: 7V-26V (3-6S) Continuous Current: 75A Burst Current: 85A MOSFET Model: IRF7480MTRPBF 32-bit main controller, supports sine wave startup Intended for RC drone and model aircraft use Specification B: No onboard BEC; equipped with 1 x 50V 470uF electrolytic capacitor and 1 heatsink Note: The default ESC (no onboard BEC) parameters are suitable for aircraft models or transitional aircraft. For vehicle use, an external BEC must be welded (not included, user-supplied), and parameters must be adjusted accordingly. The PCB board may be green or black. Due to different production batches, board color is randomly selected. Specific color requests cannot be accommodated. Color: As Shown Material: PC Package Contents: 1 x Speed Controller (Due to different product batches, appearance may vary slightly, but does not affect functionality) Package includes only the items listed above; other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.