Casio has released the WSD-F30RG, its newest smartwatch from the PRO TREK line. It has an OLED display, but also has individual monochrome and color overlays. The OEM also asserts that it has an improved resolution for detailed legibility on its screen.
https://www.notebookcheck.net/Casio-s-latest-PRO-TREK-smartwatch-has-a-dual-layer-display-and-exclusive-outdoor-app-features.421825.0.html