I have several time machines for performing in various settings and/or outfits. I love them all, but
this is easily my favorite.
I have NEVER had an issue with the reveal. Generally speaking,
from the time they give me their answer to the time I reveal the watch is MAYBE 15 seconds at worst.
And 15 seconds is nothing.
If people are having to wait a significant amount of time
before revealing, then they need to work on their presentation a bit.
I can't say enough
good things about the effect.