These high quality lamps are the latest addition to the Lifemax range of High Vision products. It provides light from a 12-watt tube fitted around a 4-inch diameter magnifying lens. Perfect for when you are reading small print, doing hobbies, repair work and much more. The adjustable arm always get the light and magnification at the correct angle for you. Lens material: glass, lens size: 4, large 3 dioptre magnifying area (equalling a magnification strength of x 1.75) and small12 dioptre magnifying lens (equalling a magnification strength of x 4) mains voltage: 220v-240v, light source: 12w circular fluorescent lamp, measurements: height 40 cm ; base 18 x 16 cm.