Fangrui Product Details Features: 1. Automatically Correct:allows Gyroscope Remote Control Car Modified Steering Angle. 2. Remote Gain Control:you Can Adjust The Size Of The Gyroscopic Effect Of The Third Channel By Remote Control Remote Gain Control. 3. Led Status Indicator:median Capture, Power Indicator, Gyro Indication. 4. Rudder Amount Adjustment Function:in Remote Gain Mode Can Be Used To Adjust The Servo Output Limit The Amount Of Rudder. 5. Local Gain Adjustment Function:available Limit/gain Adjustment Gyroscopic Effect Size. Gc301 Sk-600068 Gyro For Rc Cars,it Is A Device Using Gyro Sensor And Software Algorithm To Adjust Steering Output, Providing You With A More Stable And Controlled Driving Experience.allows You To Drive The Toward A Given Direction And Taking Precision Turns At High Apeeed More Manageable,more Controllable. Color: As Shown Material: Plastic+metal Package Contents: 1 X Gc301 4-8.4v Mini Gyro Sensor Gyroscope Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection