Casio F-10/11/12 and a NOS F-23W! I've acquired these on my journey to collect retro/vintage Casio's. They are slowly creeping up in cost and more so in unused condition. : r/casio
Casio unveils smart watch for the outdoors
Found an Old Casio f10 | WatchUSeek Watch Forums
Casio Smart Outdoor Watch WSD-F10 Smartwatch Black WSD-F10BK - Best Buy