Highlights Equipped with latest Gyroscope technology to make it fly more stably 4 channels radio control (turn left, turn right, up, down, forward, backward, left side, right side) The helicopter set double propellers airplane of the helicopter series is coaxial & reversing structure effectively offers table flight & easy operation. The biggest difference between it & other palm size toys is that the it is a 4-Channel helicopters, it can go sideways which other models cannot. Manufacturer recommended age: 14 years & up Specifications Battery Type: 3.7V 150m Ah Li-poly Transmitter powered by: 5 x 1.5AA batteries (not included) Charging Time: about 40-50 minutes (USB charging) Run time per charge: about 5 minutes Weight Approx: 51g Size Approx: 18.5 x 11 x 12 cm Package Contents 1 Helicopter 1 Transmitter 2 Spare tail propeller 2 Spare rotor blades 2 Connect Buckles 1 USB (Universal Serial Bus) charging cable 1 Instruction manual in English