Full 3 channel super wireless control~Main Rotor diameter: 255mm Advanced dual rotor system Length: 315mm Precision speed control and excellent flying stability. Machine height: 150mm Equipped with LED light while flying. Fuselage width: 80mm Built-in li-poly batteries for long flying time. Tail blade length: 48mm With Saves electricity function. Real-shape and plastic body design. This new style is for customer who come to another level to fly helicopter. One hour charge is equal to a 5-8 minutes flight. Suitable for ages 14 years+. LIPO Battery: 500mAh 3.7v Power Adapter: AC110 - 220V The normal retail price is $80. Ours is Only $50