An improved composition and method for reducing the formation of oxygen radicals in mononuclear phagocytes is disclosed. A charging circuit can charge one or more rechargeable batteries. The transceiver includes a first transmission element disposed on the first half portion, a second transmission element disposed on the second half portion, and a signal transmitted from one of the first and second transmission elements to the other. In some configurations, at least a portion of the back area may be formed from the material.