Features CCPM System Auto-rotation System Tail Belt Drive System High Inertial Main Blade High Rigidity Iron Main Shaft Shock Proof Iron Landing Skids Full Ball Bearing & Metal Ball End High Strength Carbon Fibre Tail Stand Specifications Length:650mm Height:230mm Main Rotor Blades diameter:680mm Tail Rotor Blades diameter :130mm Flight Weight:670g Empty Weight:340g Motor: 450 brushless motor Rotate Ratio:12:140/10:22 25A Brushless Speed Controller Esky Professional GYRO