Z3 Unmanned Remote Control Helicopter Main technical data Max. take off weight 120Kg Mission load capability 25kg Diameter of main blade wing 3400mm Diameter of tail blade wing 580mm Length of fuselage 3600mm Height 1110mm Width 725mm Engine 25kw Remote control radius 110km Flight altitude 3200m Max. Flight Hrs. 3.8H Environment requirement -15°C ~ 55°C