For mechanical processing, jewelry appraisal, watch repair, small engraving, and other tasks, the Headband Head Magnifier works excellently. The four pairs of interchangeable lenses (10X, 15X, 20X, and 25X) make it simple to switch between magnifications. 

This magnification loupe includes a double eye patch with an adjustable LED and is made for low-light situations. The eye patches can be rotated 150 degrees up and down and moved left and right. The bracket and the headband can be switched out.

It should not be placed directly in the sun to prevent fires.
Keep your magnifying glass away from the sun to avoid burning it.

Specifications:

Type: Eyewear Magnifier
Material: ABS Acrylic glass
Magnification times: 10x 15x 20x 25x
Battery: 3 x AAA battery(not included)