The Casio WSD-F21HR has a heart rate monitor, finally - Android Authority
Casio PRO TREK Smart WSD F-30 rugged Wear OS outdoor watch with GPS announced [Update: Available from January 18]
Casio unveils its first G-Shock smartwatch with Wear OS | Engadget
Got this Casio Pro Trek WSD-F21HR. WearOS, mil-spec durability, heart rate + other sensors useful in outdoors activities and most importantly dual layer screen that can show just the time, reputedly for