TIL astronaut Buzz Aldrin wears multiple watches because 2 have sentimental value. They are Omega watches, and were apparently the first watches taken to the moon.

https://www.distractify.com/p/why-does-buzz-aldrin-wear-two-watches

https://www.reddit.com/r/todayilearned/comments/152h2fh/til_astronaut_buzz_aldrin_wears_multiple_watches/