Suspects were nabbed and shipped to Gitmo because they wore cheap watches. A specific model of watch — a Casio style released in the 1980s — was suspected to be used as a timer by al-Qaeda operatives. People in Afghanistan were seized and sent to the detention facility because they were wearing the watches, but most have been quietly released because of a lack of evidence.
Good thing they weren't "Swatches" because everyone who appeared on MTV in the 80s would have been arrested. Run "DMC" Run!