Alakazam - alarmed(MENU)

Here's The Effect:
Your spectator imagines an alarm clock sitting on their bedside table. They name any day ie Mon,Tues, Wed etc. and any time (There is no force of any kind). You draw a clock depicting the selected time and day and ask your spec if this is what they imagined. You now reach in to your pocket and remove a photo of an old style digital alarm clock radio. The alarm clock in the photo shows the exact time and day the spectator just thought of!