Lumio UV is a modern reincarnation of a Woods lamp. With its 75 mm lens offering a magnification of 2x, the power of 40 UV LEDs (light emitting diodes) Lumio UV is a great tool for a variety of examinations which require UV light. Lumio is powered by AA batteries that allow for a minimum of 250 exams at 30 seconds each. Model No. LUM-UV is supplied with one Lumio UV, four AA batteries and one protective neoprene pouch.