The Gerlitz Ephemeris Watch is mechanically gaffed to show the desired setting after 3 separate openings.  The desired setting can be secretly programmed into the watch while casually showing the spectator the watch.
The 12 Zodiac cards are marked on the back if used to gain the spectator's Zodiac sign.  Many other standard mentalism methods or apparatus can be used to gain this information also.
Following is a complete routine using an additional prop for 3  incredibly impossible readings as an example of the watch's versatility.
"Water, Wine, & The Watch"
Gerlitz Magic Films
Back To The Gerlitz Ephemeris Watch