https://www.treelineusa.com/magnifier...
The magnifying visor comes with 4 interchangeable lenses (1.2x, 1.8x, 2.5x, and 3.5x). You can use two lenses at once to increase magnification. It is also equipped with a detachable LED light to help illuminate your project (uses 2 AA batteries, not included). This visor has an adjustable head band.