Need to locate serial number... topic

EDIT: I'm so dumb, it was at the side of the box.


My watch has an issue and needs to be repaired, and I need my serial number. Here is my situation:

* The screen is black

* The screen responds to touch

* I can take screenshots of the watch

* My phone can connect to my watch

* I peeled the sticker off the back of the watch

* The box has all of its original contents inside (and stickers)

Is there ANY WAY I can get my serial number? Thank you