This is the entry point for gaming monitors that actually feel like gaming monitors. It's 24 inches at 1080p, which is the standard resolution most people have on their laptops — nothing fancy, but totally adequate for gaming and everyday use. The screen refreshes 180 times per second, so motion looks smooth instead of choppy, and pixels switch fast enough that you won't see blurry trails in shooters.
The whole point here is getting you gaming features without the markup. It's smaller and lower-resolution than the popular 27-inch 1440p screens, but those cost significantly more. If you're building your first gaming setup or upgrading from a regular 60Hz monitor, this gives you most of the benefit for less money.
The HDR label doesn't mean much — treat this as a regular bright screen and you'll be happy with it.