Need not when can hang on the neck, it no longer worry about can't find the glasses
Easy push/pull adjustment click the magnets together over your nose
Easy push or pull the lenses are attached by a metal strip that extends or retract an inch or two
Magnification Strength: 1.0 x - 4.0 x (0.25 stage)
Width 5.7' high 1.5'

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 5.91 inch
Height : 1.18 inch
Length : 7.87 inch

Item Weight: 0.96 ounce (View shipping rates and policies)
Shipping Weight: 1.44 ounce (View shipping rates and policies)

ASIN : B075YRFFY8