1, 4-CH,outdoor use 2, 2.4G,two servo,Built-in gyroscope 3, LCD screen iAplat FP * 4ch Micro Helicopter for Beginner ... * 3-Axis Gyro Super Stable and Durable 1). Simple airframe and composite plastic material ... -in gyroscope Speed adjustment,easy to fly Single propeller rc helicopter, Built in gyro for extra stability Funtion: asced/descend , forward ...