Double Horse 9101 Electric RC Helicopter Large Size GYRO 3.5CH RTF (Colors May Vary) Features: Full Function 3.5 CH Real life like Helicopter styling Ready to Fly Fully Electric Powered Co-axial Main Rotor Metal Frame and Construction Gyroscope Included Easy to Fly Bright Strobing LED head and tail lights Auto Stable and Precision Speed Unique Material Withstands Crashes Two powerful 390 main motors + N20 Tail Motor Altitude and Rotor Speed Control Battery: 7.4V 1300mAH Li-Po Flight Time: 10 Min Overall Length: 31 Inches Height: 10 Inches Main Rotor Diameter: 21 Inches Tail Rotor Diameter: 6 Inches