"It's a functional 4K smart display for an impossibly low price."
'4K UHD' means the panel has the pixels for a sharp image. 'HDR10' means it can read the signal, but without high peak brightness and wide color gamut hardware, the on-screen result is far from the HDR promise.
This is a secondary TV for a kitchen, dorm, or garage where price is the only metric that matters. It's a screen that turns on and shows Netflix, and for $150, that's the entire job description.
Anyone seeking a primary TV for a living room, or those sensitive to picture quality and motion clarity will find this unit lacking. The money saved upfront will likely be spent on its replacement.