... 25*5*9CM CERTIFICATES:CE/ROSH 9.65" WL V911 Single Rotor 4CH Gyro 2.4G RC ... helicopter. As most rc helicopters do, the V911 helicopters can rise, fall, forward, backward, turn right, 360 turn ... left, hovering, etc. It can fly indoor and outdoor, over length remote control distance. ... . With 2.4GHz radio system, many helicopters can fly at the same time without interference.Features: ...