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. SKYRC 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 and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.