Holy Stone HS170 Predator Mini RC Helicopter Drone 2.4Ghz 6-Axis Gyro 4 Channels Quadcopter Good Choice for Drone Training HEADLESS SECURITY SYSTEM enable Any Level of Players to fly the drone easily. 2.4GHz Technology Adopted for Anti-Interference More Stable and Flexible with 6-Axis Gyro Stablization System Good Performance of Wind-Resistant Control Range: About 30-50 Meters