Casio has launched the G-SQUAD GBD-H2000 smartwatch, now available for pre-order in Europe. The wearable is the first to feature the licensed Polar algorithm, using the company's database to analyse your workouts and provide tools like sleep health tracking. Plus, you can recharge the watch's battery using solar power.https://www.notebookcheck.net/Casio-G-SQUAD-GBD-H2000-launches-as-first-smartwatch-with-Polar-algorithm.698205.0.html
It's not a smartwatch, Casio doesn't seem to claim that it is either. Don't know where the author of this article is getting that from.
The designation of smart-watch/phone/TV etc indicates that it is a platform which you can install and run selected apps on.