Each disc is numbered & corresponds with the enclosed card. Smooth & comfortable. Certified & numbered Quantum bio-scalar energy pendant. Easy Slip knot closure. EMF protection, improves circulation, stamina, endurance, strength, enhances cellular permeability, detoxification, improves flexibility, enhances immune & endocrine systems, helps retard aging process, calms mind & improves focus, bio-magnetic weight loss, stimulates acupoints, improves flexibility, alleviates soreness, aches & pains.