I don't know if it's a native 4K projector, but a 4K film on this project really brings a massively higher level of detail than a fullHD film. It's a pleasure! I'm very pleased, the only thing that bothered me at first was that only Bluetooth devices with SCMS-T are supported.

The manufacturer's product page has the following footnote:
"1 1. 4K enhancement technology shifts each pixel diagonally to double Full HD resolution. In 3D mode, the picture resolution is Full HD."

A native 4K projector is rather unavailable at this price. I am still very satisfied with the picture quality.