Features: 1) Up to 4-5 minutes flight time. 2) 3.7V 350mah lithium polymet battery is installed in the helicopter. 3) Completely stable in flight. 4) Perfect for indoor flight. 5) 3D flight, go forward,left and right 6) Rear rotor stabilizer for controlled turns 7) Hover trimming tab on controller stable hover and full 3-D flight 8) 3-channel radio controller 9) Helicopter size: 39 x 25 x 11cm Inner packing: Color box size: 43 x 16 x 30cm Outer packing: 12pcs/ctn Carton dimensions: 64.5 x 43 x 92cm Volume: 0.255 cbm N.W.: 12kg G.W.: 14kg Conveyance: Qty/20 FCL: 1,320pcs Qty/40 HQ: 3,216pcs rc toys,rc plane,rc helicopter,hot toys,new toys,good toys,baby toys,children toys.