WL 4CH 2.4GHz Mini Radio Single Propeller RC Helicopter Gyro V911 RTF White&Blue 4CH 2.4GHz Mini Radio Single Propeller RC Helicopter Gyro V911 RTF White&Blue Enter your model number above to make sure this fits. Connectivity becoming erratic and unstable? The controller that comes with your device will have certain buttons that govern signal and movement compensation. If your RC helicopter favors leaning to the right, adjust it's pitch by counterbalancing the opposite direction and vice versa.