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The entire watch is 10$.

• sq_ 7y ago
  Yeah, I’m aware. I wouldn’t really care if the watch itself died, but leaking oil would be a bit annoying and making things that should fall apart last longer is often a fun challenge.
  • dvt 7y ago
    The o-ring is pretty flimsy (you can see it in a few pictures), but some have done this mod and have worn their F-91Ws without any leakage for 5+ years, so I expect it to be "good enough."
    • sq_ 7y ago
      Good to know. Thanks for the info and for writing the original post about this!