OMG $1 Bill
This effect is absolutely crazy. You predict the time with the watch hanging from a buck. What's so incredible is that you can still 'stop/start' the engine if choose to do so — and even advance the minute hand in short 1-2 second increments.
We wrestled with the construction of the bill. It required a special, ultra small, thin PK gimmick. It had to be positioned 'precisely' at a 'sweet spot'. This setup is what gives you total control of the 45 sec. warp-speed engine. You can stop it on a dime. You literally hold the bill by your finger tips & can stop/start any time you want.
At the beginning of the routine you can show the watch face suspended on the bill. When we performed this to a few pros, all they could say was “OMG”. And so will you!