Gary Busey wears a Casio Scientific Calculator Watch

Gary Busey plays Peter Keyes in Stephen Hopkins's Predator 2 (1990), the head of a clandestine federal task force that has been tracking the creature through Los Angeles behind a DEA cover story. Every detail of that cover is a little off, which is part of the joke.

Keyes has been identified as wearing a Casio calculator watch, a model from the scientific-calculator line whose tiny keypad puts trigonometric functions on the wrist. Casio's calculator watches arrived in the early 1980s and found a following among engineers and technicians, which suits a man whose real work is data rather than street-level drug busts. The identification comes from a watch-spotting video rather than a documented source, and the watch is not clear in the available stills, so it stays unconfirmed.