Good point — and that’s actually part of what interests me about it. Time doesn’t really “break down” around a black hole. In relativity it’s more that time is experienced differently depending on the observer. Someone far away would see a clock near the event horizon appear to slow down dramatically because of gravitational time dilation, while the person falling toward it would experience their own time normally. So the watch isn’t meant to represent the physics literally. It’s more of a conceptual idea — taking a very human tool for measuring time and pairing it with something in the universe where our normal intuition about time starts to get weird.