Megaview headband magnifier
Includes three different interchangeable lens plates that are simple to change:
2.00 X - Focal lenght 25,00 cm.
2.50 X - Focal lenght 20,30 cm.
3.00 X - Focal lenght 12,00 cm.
Megaview magnifying visor provides hands-free magnification.
The visor tilts up for normal viewing, or down for for magnification.
Made in Japan.