This is the best maginfier I have found. Its comfortable, doesn’t slip down AND gives you some peripheral vision while you have it on. The lens is treated with strengthen process to reach surface hardness of H5 degrees.
5-magnification lenses with 2-LED light
5 kinds of multiple lens can be chosen, 1.0X, 1.5X, 2.0X, 2.5X and 3.5X

Easy to replace the batteries.

LED Features:
2 LEDs for illumination.
A light head magnifying glasses of wide-view scope with 3D lens and light.
Head light can be adjusted for a good angle.
Comes with an adjustable elastic head band for or temples depending on your preference.
 

​Magnification    Field of view 

1.0 x                      555mm

1.5 x                      381mm

2.0 x                      278mm

2.5 x                      183mm