Specifications:<br> 254nm Shortwave and 365nm Longwave UV Lamp for Fluorescence Stamps & Banknotes<br> Note : 4 AA batteries (Not included)<br> This long wave lamp will show you the different types of fluorescent and coloured bands on GB stamps (see illustration for blue and yellow).<br> It will also work on stamps from Australia, Canada, China, France, Germany, Hong Kong, Mexico, Norway and Russia.<br> This lamp will also detect different paper types ie: OCP, FCP, PCP and ACP.<br> For best results use in a dimly lit room against a dark background. This hand held portable model requires 4 AA batteries<br> Short wave Lamp<br> This Short wave lamp will clearly show you the phosphor and the phosphor afterglow on GB stamps up to 1992.<br> For best results use a short wave lamp in a dark room, the darker the room the better.<br> To see the different coloured phosphors on the 1960 Wildings issue its the phosphor afterglow you are looking for when you turn the UV light off,<br> Green phosphor is the brightest (10 seconds afterglow) followed by blue, (15 seconds) the Violet has a very short afterglow (5 seconds) It will be difficult to see the<br> after glow in daylight, the darker the room the better.<br> This two hand held portable model requires 4 AA batteries (Not included)<br> Condition:100% new and high quality<br> Manufacture:China,Chinese Factory Homegrown products for Sale<br> Package Included<br> 1 x 365nm longwave UV lamp<br> 1 x 254nm shortwave UV lamp