The BL15 UV Wand uses a single 15-watt integrally filtered longwave tube to produce an incredible amount of light output. The UV Wand consists of a 18" clear plastic tube (which protects the UV tube from breakage) with black plastic end caps. This lamp has an extra long 25' power cord. It is very lightweight and easy to hold for long periods of time. The design of the lamp makes it ideal for painting restorers due to its powerful output that allows it to be used in even well lighted rooms. The light produced is a broad beam that can easily illuminate an entire painting with one sweep of the UV Wand.