My 3502 has the wrist-flick function, at first i didn't know, but i suddenly noticed after replacing the batteries that it had a mercury switch.
The drop of mercury was stuck in the glass tube, but with some gentle taps i got it to move freely again, it works fine now.
Nowhere i find anything about this on the web, even Barbie9 doesn't mention this in his auctions.
Is my module something special or are they all not working??