OSC-Grey Donegan OptiSight light weight headband magnifier is worn over the head leaving both hands free for working and its light weight makes its very comfortable to wear. Headband is fully adjustable to fit any size quickly and easily and is ideal for Watchmakers, jewelers, tool & die makers, engravers, stamp and coin collectors, needlepoint, physicians, dentists, pharmacies and hospitals. Can be worn over eyeglasses. Comes with 3 lenses 1.75x, 2x, 2.5x,

 

• - Lens Power/Magnification - 1.75x, 2x, 2.5x
• - Lens Diameter 1.2"x3"
• - Lens Diopter 3,4,7
• - Lens Focal Length 13"-5"