What's in Your Oven?

I heard the oven beep tonight, and I assumed my dad was making pizza rolls. My mom didn't know what he was making, so she opened the oven door. You'll never guess what was inside.
His watch!
Wait-what? Watches don't go in the oven...
He came walking into the room just then, and I said "Daddy, is that your watch in the oven?!"
His reply? "Yes."

Huh?

I asked him why his watch was in the oven.
He said "Well, it's having some moisture problems. I'm hoping I can solve it without cooking the watch." (I didn't point out that he would be baking the watch)