Miguel O'Hara: Miles, being Spider-man is a sacrifice. You have a choice between saving one person and saving every world.
Miguel O'Hara: My name is Miguel O'Hara. I'm this dimension's one and only Spider-Man. At least I was. But I'm not like the others. I don't always like what I have to do. But I know I have to be the one to do it.
Miguel O'Hara: And don't get me started on Doctor Strange and that little nerd back on Earth-199999.
Gwen Stacy: Who's "Doctor Strange"? A guy with a name like that probably shouldn't be a medical doctor.
Hobie Brown: I don't believe in teams.
Miles Morales: Aren't you in a band?
Hobie Brown: I don't believe in consistency.
Miles Morales: Oh this guy's killing me.
Answer: Hobie or Spider-Punk gave Gwen's father a watch he'd built himself. It's fairly safe to assume he built more than one.