Dual rotor structure makes flying even more precise Striking design Tr-band switch allows 3 helicopters fly together without interference Mini 4 Ch Indoor Infrared controlled helicopter The easiest way to fly a helicopter in the comfort of your own home Rechargeable via the Radio control unit 4 Channel flying updown leftright backwardsforwards & tilt flying Li-Po battery 3.7V 140m Ah Operation range 8m Charging time 45 minutes Flying time 8 minutes