"Mini" Personal Harmonizer - (size of a pack of cards) Portable multipurpose unit designed to neutralize EMFs (made by Total Shield Company). Produces a 7.83 Hz field (Schumann Resonance), blanketing a room-size area of 100 sq feet, and having the effect of overcoming negative EMF fields. Rechargeable battery and charger included. Unit has 2 different frequencies: Schumann and 1/2 Schumann with corresponding flashing lights. This device is a special order item and has a no return/refund policy.