This pocket size magnifier features 2 lenses, a main 21mm lens offering 30X magnification and secondary 12mm lens with 60X magnification. Also features an LED light as well as a UV light for currency detection or fluorescents in stones. LED light comes on automatically when open. Measures 2 1/2" x 1 1/2" closed, 4" x 1 1/2" open. Three LR113 batteries included.