This is the monitor you get when color accuracy matters more than speed. ViewSonic calibrates each one at the factory to hit professional color standards, so what you see on screen matches what prints or what clients see on their devices. That makes it useful for photo editing, graphic design, or video work where you can't afford surprises.
The screen is 27 inches at 4K, so text is crisp and you get plenty of space to spread out palettes and toolbars without zooming in and out constantly. It refreshes 60 times per second, which is smooth enough for everything except gaming. Colors cover the full range pros expect, though the HDR label here doesn't mean much — it's called HDR but doesn't really pop.
It has USB-C, so you can sometimes charge a laptop while sending it picture through one cable, but check the specs for your exact model since power delivery varies.