Bought 3 Go Go Hamsters for XMAS. Within minutes 1 was broken, about an hour later the 2nd broke. Fixed the first one as it was a button falling out inside. 2nd one can't be fixed as it's the gearbox inside to make the hamster move. As these toys are aimed at young children, they should actually be robust enough to be played with by children.
When we first got them out my kids thought they were great, but this wore off very quickly. There are much better toys out there, I would suggest avoiding these. Total rubbish.