brand new and high quality Feature: Brushless ESC :output current 80A, input : 2-6S, BEC: 5V/5A ( Built-in switch mode BEC regulators ). Throttle Range Calibration Function: adapt to the throttle difference between different strokes and improve the linearity of throttle response. Security Power Supply Function: when the power is turned on, the motor will not start immediately regardless of the position of the throttle stick to prevent personal injury. Comprehensive for Protection Functions: undervoltage for protection, overvoltage for protection, overheating for protection, low battery for protection and remote signal loss for protection. Further Extended Function: All these functions make ithe RC Drone more safe, useful, durable and long service life, and it can help you improve the performance. Specifications: Item Type: RC Electric Speed Controller Material: Electronic Components Size: Approx. 86x38x12 mm/3.38x1.49x0.47 in Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1 Piece 80A Electric Speed Controller