I am partially blind but I can still see.I have legs, but I don’t walk or run;But I use them while sleeping. What am I?

Question

I walk, but have no legs. I sleep, but never dream. You can
rock me in a cradle, but I am not a baby and I can go around
the world faster than you can cross a room. What am I?

Answer 1

A bat. He sleeps while hanging on his legs.