This is the monitor for someone who wants smooth gaming at a sharper-than-1080p resolution but doesn't want to spend flagship money. It's 27 inches at 1440p, which is the sweet spot for desktop gaming — text stays readable, you see more of the game world, and it's not as demanding on your graphics card as 4K.
The 180Hz refresh rate means motion stays smooth in fast games, and the 1ms response time keeps pixels from leaving blurry trails when things move quickly. Colors come from an IPS panel, so the picture looks consistent whether you're sitting dead center or off to the side, and you won't get the washed-out look cheaper VA panels sometimes give.
SANSUI isn't a household brand in monitors, so you're trading name recognition for price. The HDR label here is vague — assume it's more of a checkbox feature than something that'll deliver those punchy bright highlights real HDR gives you.