"A bright projector with a promising OS, undermined by misleading 4K marketing."
The '4K Decoding' spec means this projector can accept a 4K video stream from Netflix or a Blu-ray, but the image it projects on your wall is fundamentally 1080p resolution.
This is for someone who values a simple, responsive user interface and high brightness for casual viewing above all else. If you want a self-contained unit with decent built-in sound for moving between rooms, and you are frustrated by laggy smart TV systems, the feature set is targeted at you.
Anyone seeking a true 4K image should look elsewhere, as this is a 1080p projector. For $600, you are in the price range of entry-level projectors from established brands, which often provide better warranties and disclosed lamp longevity.