Thunder Tiger delivers value with its Electric RC Helicopter, the eRaptor E620 SE. The Raptor-E Series are based on a proven design the original Thunder Tiger Raptor Nitro Series. Thunder Tiger equipped the Raptor E620 SE with E-CCPM (Electronic Cyclic/Collective Pitch Mixing) control system. Reliable flying characteristics, optimize frame structure with higher center of gravity make for more lively control response. The Thunder Tiger Raptor E620 SE the best 3D electric RC helicopter, to enjoy the extreme 3D flying. The Thunder Tiger Raptor 50 SE (Nitro Series) metal rotor head and Raptor 50 Titan longer type tail drive system. It is combined with carbon lower side frames, designed to adopt the electric power unit and provide the best power-to-weight ratio. Full Length of fuselage: 1220mm (48.03 inch) Full width of fuselage: 140mm (5.51 inch) Total height: 390mm (15.35 inch) Main rotor dia: 1345~1385mm (52.95~54.53 inch) Tail rotor dia: 237mm (9.33 inch) Gear ratio: 1:8.54~12.33:4.56 Full equipped weight: 3,500g (7.7 lbs)