The digital Casio watch, model F91W in particular is an affordable, functional, and reliable timepiece worn by millions around the world and essential for any backpacker or Napleon Dynomite wannabe. It's also possible evidence that you are a terrorist in the eyes of the US government.
The U.S. military cites the digital watches worn by prisoners when they were captured as possible evidence of terrorist ties. Casios have been used repeatedly in bombs, after all, including one used by the architect of the 1993 World Trade Center attack.
I'm glad I ditched mine after I turned 14.
[Via]