SUMAG Ultimate Mental Power Ball Electronic Magnet Detector Magic Trick for Magician

A ball is given to a spectater(s), they can freely choose one of them to hold the ball on hand, magician just feel / touch spectator(s) hand then can find out which one hold the ball. It can be perform anytime anywhere and repeat performing without reset, very very cool mentalism magic! This is an electronic accessory, the detection range is depends on the size of magnet you are using. It is a silent vibration unit. Buyer can try to perform as Cyril, which pull the magnet ball into a toy ...etc