The Casio F91W has been worn by Osama bin Laden and used by Chechen bombers largely due to the rugged durability and bomb-making abilities of the F-19W.
Modern Warfare Research Group
A forgotten loophole from the 90s - camouflage passports
Casio F-91W: The strangely ubiquitous watch - BBC News
Casio F-91W: The strangely ubiquitous watch - BBC News
Casio F-91W: terrorist watch
Modern Warfare Research Group
Casio's F-91W watch: the design favourite of hipsters and al-Qaida, Design
Casio F-91W - How does $17 buy this much style?
Why the F-91W Keeps Ticking