Overview: Magnification: 45X- Lens diameter: 21mm- Great magnifier for industrial purmpose, circuit board & printing industry, medical science, gardening, coins & stamp, education, geography, house living & offices- With bright white LED illumination (3 LR1130 Battery included)- Pull the magnifier out & white light lite-up- Push the magnifier back & the light goes off Specification: Weight Approx:38.1g Size Approx:5.2 x 3.3 x 1.9