The KK70 may retail for less than US$50, but it has a lot going for it, nonetheless. For one, the smartwatch has an AMOLED display with a reported 32-bit colour depth. The manufacturer has also included a stainless steel case, among its other impressive features.
https://www.notebookcheck.net/KK70-A-smartwatch-with-a-stainless-steel-chassis-a-digital-crown-and-an-AMOLED-display-for-under-US-50.547387.0.html
Well a key information in this article is false: the screen is not AMOLED but an IPS LCD screen.
Not sure why a product, AliExpress indicates no one has bought, hence no reviews, gets a dedicated page entry on a website such as this.
Paid advert, perhaps. But even then let's get the specifications right.