Xpeed XP3131 Helicopter Product Information XP3131• Lengh 33cm (13 inches)• Li-Poly batteries for long flying time• Long control distance• Equipped with LED light while flying Sturdy construction. Very stable control system allows adjustment of altitude & rotor speed. Co-axial structure. Twin motors enable stable fly both indoor & outdoor. Several strong LED lights assist visibility when flying at night. Technical Data Control distance: 20-30 m Battery type: 3.7V 500m Ah Li-Po Flying time: 7-9 Min Charging time: 90 min Charging mode: Charged by mains adapter