You remove your watch and show your spectator the current time on the watch's face. You then tell the spectator you are going to change the watch to a predicted time. Holding the watch out with the back facing your spectator, you ask the spectator to name any time of the day or night to the exact minute. After this random time is announced out loud, you then turn the watch around to your spectator and show the same exact time is revealed on the watch's face!

Comes complete with watch and instruction sheet.