The Xiaomi subsidiary Haylou, pronounced "Hello", has released a new smartwatch, the Solar. While the Haylou Solar is not a solar-powered smartwatch as its name suggests, it still packs some impressive tech for ~US$20.
https://www.notebookcheck.net/Xiaomi-Haylou-Solar-Not-solar-powered-but-a-smartwatch-that-costs-just-US-20.460053.0.html