The Daylight Lighting UN0004 is a Naturalight™ tube that last up to 10 times longer than any other ordinary bulbs and in addition to that, it produce a full spectrum light which reduces a glare and eye-strain making close-up tasks like writing, reading, sewing and general inspection works easier. Product Details:

12 Watt Naturalight™ 3-1/2" Diameter Bulb for UN1040 Magnifying Lamp