I always had standalone microwave ovens, but now it's a built-in above the stove, and when I got that I just went with the brand that the stove was so they'd match.
A couple of years after having that one, something was wonky with the door handle. I forget what, exactly, but we eventually figured out that because it's right over the highest powered burner (it's a gas stove), the heat had gradually screwed up the handle. We chose its replacement (different brand) because its handle wasn't plastic. It's a lightweight metal that might feel warm to the touch now and then but it holds up just fine over that burner.
As for what power it is, or anything else about it, I haven't the slightest idea.

Maybe I'll pull out the manual and have a look.