This amazing Illuminated Magnifier from Trademark ToolsT will both bring your work into focus as well as light it with 40 super bright LED lights!Accurately and easily control the amount of illumination with the dimmer dial!With a bifocal lens you"ll be able to see all the detail in miniscule work or reading. The hands free operation of this amazing magnifier is perfect for electronics, printing, stamp collecting, jewelry, reading and much more! In addition cordless operation and rechargeable batteries allow you to take this with you wherever you go!Features include:Lens material: glassLens size: 4 inchesDiopter: 3 Diopter main lens, 8 Diopter bifocal lens40 Super Bright LEDsInput Voltage: DC 12VPower: 2.5WWorking time: 2 hoursBattery: Ni CdLED Life: 20000 hoursLuminance: 550 LuxAdjustable armDimensions: 13 x 6.25 x 14.25 inchesIncludes retail packaging