Sixth Sense 3Have you always wanted to perform 'Which Hand' with confidence? Read on! More than three times as powerful as its predecessor, this tiny device allows you to perform a variety of beautiful mind reading effects including the classic, 'which hand.' Place the sensor under your watch strap and a silent vibration will let you know in which hand a volunteer has hidden a magnetic coin. Sixth Sense 3 now works with all magnetic currency, even smaller coins