Yes, you can go to prison, without trial, for over 10 years, for possessing a $4 watch
was that the SOLE reason? or just a contributing factor?? did you know that ALL men and women in prison breathe air??
The circumstances of their original detention are often a mystery. Many of the Guantanamo detainees were captured by locals and literally sold to the US Military. In many cases they have testimony of the group that captured these guys, but many question if it was more of a local dispute and one sect was trying to get another detained... etc... So your question is hard to answer in that way.
In 16 cases however, the only still existing physical evidence against those detainees is the watch that was found on them when they were captured. So is it the only evidence against them? Not really... there's questionable eye witness testimony from people that could likely never be found again if they're even still alive that was relayed to random military personnel in the middle of a war zone. But in the case of all Guantanamo detainees, the burden of proof is on the prisoner. They are required to prove they are not terrorists. They've no access to lawyers, research, the internet, newspapers and often the evidence against them is "Classified" so they're not even allowed to view that.
Detainee 154, Mazin Salih Musaid Al Awfi: Millions and millions of people have these types of Casio watches. If that is a crime, why doesn’t the United States arrest and sentence all the shops and people who own them? This is not a logical or reasonable piece of evidence.
Detainee 298, Salih Uyar: If it is a crime to carry this watch, your own military personnel also carry this watch. Does this mean they’re just terrorists as well?
Detainee 651, Usama Hassan Ahmend Abu Kabir: I have a Casio watch due to the fact that they are inexpensive and they last a long time. I like my watch because it is durable. It had a calculator and was waterproof, and before prayers we have to wash up all the way to my elbows.
What's worse is, you don't even need to have a watch:
http://en.wikipedia.org/wiki/K...
They accidentally captured a German car salesman. Flew him out of the country, tortured him for months. Realized he was the wrong guy, but kept him anyway. The only reason he's still alive is because Condoleezza Rice accidentally found out about him and immediately ordered his release. You don't even need to have a scary looking watch. Simply being detained, and knowing how the process works is a threat to national security, so if they capture you by mistake, they'll hold you forever so you can't reveal what happened.