just read the instruction
In my own opinion, it's the combinations of three element; O2, vibrator & blade.
aroplane
I think they can fly pretty fast.
humming birds fly so fast because they are so fast
Orville Wright and Wilbur Wright
fast
probably I did last year and had no problems.
250 per hr kilomiter
As fast as you can throw them ;)
Fast enough.
How fast is an albatross
bobwhites can fly quite fast but I am not exactly sure of how fast