"A kitchen-sink feature list for an impossibly low price; expect compromises on all fronts."
The '4K dash cam' refers to the pixel count of the sensor. However, ultimate video clarity depends on the lens, processor, and recording bitrate, all of which are cost-engineered here, likely making it no more useful for capturing license plates than a good 1080p system.
This is for someone with an older car who wants a cheap, non-permanent way to add modern phone projection like CarPlay or Android Auto. The dash cam functions should be viewed as a secondary bonus, not a primary, reliable safety feature.
Anyone who needs a truly reliable dash cam for insurance or security purposes should buy a dedicated unit. Those who value software stability, long-term support, or prefer an uncluttered dashboard free of extra screens and wires should also skip this.