The new WSD-F30 is a rugged outdoor smartwatch from Casio. The WSD-F30 is about 4 mm thinner than Casio's other rugged smartwatches but manages to run for longer, thanks in part to a new "Extend Mode" setting that shuts off some wireless radios. Casio has yet to announce pricing or a release date.
https://www.notebookcheck.net/Casio-s-WSD-F30-is-a-longer-lasting-and-slightly-slimmer-rugged-smartwatch.327254.0.html
I think they should go ahead and make a full on G-Shock WearOS device. This is 70% there.