The xylum charging dock for Apple Watch is machined from a solid piece of aircraft-grade aluminum for extra strength. The brushed surface and chamfered edges of the xylum complement the design of the Watch. The circular stand fits the charging cable inside, and two rubber inserts hold the cable and magnetic charger in place while you mount or remove the Watch from the stand. It measures 2.8″ X 1.6″ X 3.1″ and is compatible with both 38mm and 42mm Watches. It will work only with watchbands that open completely.