magnifier lamp Lenz material:glass lenz size:5" Diopter:3diopter,5diopter Light sources: 22w circular fluorescent lamp Transparent lamp protection cover is supplied All metal construction *Lenz cover is available as an option Clour available: white,black,light grey 3, 5, 8-diopter lens magnifies all objects by 1.75X, 2.25X, 3X with a powerful built-in light beam so you see exactly what you're doing.