Half a croissant, on a plate, with a sign in front of it saying '50c'
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Renovating the wheel

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Wankel Watch

It’s in the wrist action
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This is a mechanical watch that winds itself from incidental wrist motion. It uses an epitrochoid flywheel to “nudge” a piston in and out, which in turn feeds from the force of the exploding gases after the ignition cycle of the nuclear particles embedded in the apex lobes of the flywheel, which lights up the numbers on cold days.
Ian Tindale, Feb 03 2016

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       This would not only subject the wearer to a potentially lethal dose of radiation but would also most likely blow their arm off to above the elbow.   

       [+]
8th of 7, Feb 03 2016
  

       Not Wanker's Watch then?
xenzag, Feb 03 2016
  

       No, that's what Justin Bieber wears.
8th of 7, Feb 03 2016
  

       Presumably, it doesn't start to wind if you stopped it before it fully wound last time, and it uses too much oil...
The apex seals will break at the slightest knock. It will go faster than all the other watches, and will subsequently be banned for 24h use.
  

       (referring to some of the characteristics of the RX7 engine)
Ling, Feb 03 2016
  
      
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