Small size. Giant strength!</br>Each case of 12 reusable, 750-gauss PowerMini magnets is supplied with 24 replaceable adhesive discs, for attaching to any surface, anywhere - ideal for anyone with an active lifestyle.</br>The magnets are polymer coated to prevent corrosion, the adhesive is medical-grade, and magnets and discs are both water-resistant for continuous wear.</br>Non-irritating smooth finish and medical-grade adhesive and both magnet and adhesive are water-resistant, for continuous wear</br>DIMENSIONS Magnet diameter 0.38 /10 mm, Adhesive disc 1 in/2.54 cm</br></br>Product Description</br></br>Small size. Giant strength. Unbelievable as it may seem, Nikken succeeded in putting advanced, patented DynaFlux® Magnetic Technology into the miniature dynamo known as the Kenko PowerMini. DynaFlux works by placing individual magnets in polar opposition, to intensify the magnetic field so that it extends farther from the surface. The result is greater field depth and 100% coverage, without requiring an increase in magnetic gauss strength. Only DynaFlux can accomplish this feat of engineering and ingenuity.</br><br/>http://www.amazon.com/gp/product/B00IPXQAL2