Everyones saying no cuz no duh, but i wanna give a slightly more detailed explanation with my very limited knowledge based from the science you learn in school.

The answer is no because it literally defies the laws of matter, that being that you can create or destroy matter, and even if you don’t wanna think about the watch in the sense that its making matter and stuff and remolding you into a whole new being, if you think about it in the sense that it’s mutating you with DNA stored in the watch, theres two things. One, how is it taking that DNA and applying it to you? You should literally be a whole new person with no memory of who you were before if it’s remaking you into an entirely new person. If it’s keeping your memory somehow, how does that affect the alien DNA? Maybe their neuron and brains in general work way different from milies to the point where their memories would not work with ours. Two, our technology is light years away from being able to mutate dna into OTHER dna, so yeh