Oooh, the Casio F91W (along with "ownership of a sat phone, a radio, and large quantities of cash.") is apparently a "indicator of a serious terror suspect".
The Gear Bunker: How The Casio F91W Became The Worlds Most Dangerous Watch
https://www.thegearbunker.com/how-the-casio-f91w-became-the-worlds-most-dangerous-watch/