Can you imagine? When a coin appears in the coin box or a coin is transferred into the coin box, you can hear that the coin passes through the lid and falls into the box. This is ECHO BOX.
Just a shake, then vanish, appear, change all done. This is ECHO BOX.
- Illusion of sound
- More visual effects
- Less operations
Half dollar size
4 techniques, 5 effects, 3 routines.