The magician introduces a walnut wood key pendant with a key attached to  it, and begins to tell an intriguing story. Four random numbers are  called by the audience, which may even be an important date or time. The  magician turns the keychain over to reveal the room number inscribed on  the back of the wooden keychain, which perfectly matches the four  random numbers.

The keychain can be handed to the audience for examination after the performance.

This  complete set includes keys, gimmicks, reset tools, stickers, paper  notepads, and other accessories for a total of 120 performances.

Features
  
The key is in full view of the audience from start to finish and never leaves their sight.
  
Numbers are selected randomly, without any force.
  
The routine supports up to four digits, making it more expandable and allowing the prediction of dates or times.
  
The keychain can be handed to the audience for examination after the performance.
  
Each set allows for 120 performances, and a refill pack will be available soon.
  
Suitable for stand-up and parlor performances.
  
No assistant required.
Inspiration Credits: Digital Deception by Marc Oberon