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Rollrball the size of a Glowball (80mm diameter).
It moves arround, changes direction and reverses direction when there is an obstacle as if by an invisible hand.
A nice tool for magicians, phantomines, kids birthday parties, as a pet toy ...
Rollrballball does NOT glow!!!
It can be recharged in 3 hours with the charger that is included in the set

You can watch A demonstration video here: