This Head Band Magnifier is a well-made headband visor, includes 4 interchangeable lenses with various lens magnifications. The Four different lens plates with a range of varying focal lengths can be used for various applications as needed. Can be used along with eyeglasses or safety glasses. 

FEATURES:

• Glass Lenses shatter-resistant

• Ground & Polished Precision

• Magnifier Head is a Flip-up unit

• Headband:  Fully Adjustable

• Comfort Design with padded headband

• Lens Size: 3-1/8" x 1-1/8" - 79mm x 28mm

• Power Range:  1.50X  to 3.50X

• Range of working distance from 4" to 20"

SPECIFICATIONS:
4 LENS INCLUDED WITH HEAD MAGNIFIER:

• Lens: 1.5X Power  -  Working Distance 20"

• Lens: 2X Power  -  Working Distance 10"

• Lens: 2.5X Power  -  Working Distance 8" (INSTALLED)

• Lens: 3.5X Power  -  Working Distance 4"

PACKAGE INCLUDES:
1 x Visor
4 x Lenses

Thank you for your time.