EFFICIENT DEHUMIDIFIER State of the art convection dryer for use with hearing aids and other hearing instruments. PORTABLE AND CONVENIENT Compact size, 3.45' diameter. Micro-USB connector. Alternative / accessory 5V power supplies available for worldwide travel. ECONOMICAL MAINTENANCE Effectively remove moisture from hearing instruments with no desiccant or chemicals. ATTRACTIVE STYLING No need to sacrifice aesthetics for functionality. Sophisticated design complements any decor. SUPERIOR MATERIAL WITH 3-YEAR WARRANTY High-quality materials to last longer with a 3-year warranty from its manufacturer.