What is the resolution (i.e. 1920x1080) of the latest Apple Watch SE screen?

Hi, I have been trying to make a custom Apple Watch watchface for a new Apple Watch SE. Unfortunately, in the photos app, I can never seem to line it up just right.

The watchface has an outline, which I need to be perfectly lined up with the edges of the screen. If you look closely at it, you will notice a small dot towards the right of the screen. This is supposed to line up with the heart rate complication.

After many attempts, I have noticed there is an inconsistency in how the watchface is displayed in the photo app's "Create a Watchface" menu. I was wondering if anyone could tell me the resolution I needed the watchface to be for it to fit, thanks.