Charged With Special, Electromagnetic Scalar Waves (Similar To Magnetic Bracelets Worn By Sportsmen) Prevents and Repels Fleas & Ticks with Nanotechnology Effective For Up to 2 Years Suitable For Dogs & Cats Of All Sizes & Ages Completely Chemical Free & Safe With No Side-Effects Non-Toxic With No Smell Promotes Good Blood Circulation & Strengthens Immune System