A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Sean C
Date: 2018 Aug 13, 21:57 -0700
"Most watches and clocks use WWVB."
Aha! It appears you are correct. According to Casio's website, the module (or the guts) of my favorite "atomic" watch indeed uses WWVB - as do most clocks and watches. That's a relief, thank you!
I'll have to check and see whether my other radio-updated watch does, too. But, considering it is also a Casio, I imagine it does. Thanks, again!