... UnitFEATURES: 1.use the intemational advances technoiogy,high-eficency,clear imaging loe leak radial,is only 1%of national standard2.light ... all direction4.it is for the use of the digital imaging systom of mouthSPECIFICATIONS: Power supply: AC220v 10%, 50Hz, 1kva Tube ...