Features:

5 Replaceable/Interconvertible lens with different magnifications marked in the middle
LED light can be rotated about 60 degree and light source box with battery compartment is detachable
Adjustable head band ensures more comfortable and tight head wearing
Light source box can be used separately as lighting source after being dismantled
Widely used in mechanical processing, electronic repair, jewelry appraisal, timepieces repair and miniature engraving, etc.

Specification:

Material:Acrylic ,ABS plastic,,LED

Magnification:1.0X,1.5X,2.0X,2.5X,3.5X

Lens Size:103*83mm

Packing size: 287X230X70/mm

Light:2 white light LEDS

Weight: 620g

Powered by: 3 AAA batteries(NOT INCLUDE FOR SAFETY!)

Single-plate lens magnifications: 1.0x, 1.5x, 2.0x, 2.5x, 3.5x

Bi-plate lens magnifications: 3.0x, 4.0x, 4.5x, 5.0x, 5.5x, 6.0x

Magnifications are marked in the middle of lens

Table below denotes the distance proportion between magnifications and viewed objects:

Magnifications      Distance to viewed objects
     1.0x                      300 ~ 350mm
     1.5x                      240 ~ 260mm
     2.0x                      215 ~ 235mm
     2.5x                      205 ~ 225mm
     3.0x                      160 ~ 180mm
     3.5x                      135 ~ 145mm
     4.0x                      125 ~ 135mm
     4.5x                      110 ~ 130mm
     5.0x                      100 ~ 120mm
     5.5x                       80 ~ 95mm
     6.0x                       60 ~ 85mm

Packing:

1 x Headband Illuminating Magnifier with LED  
5 x Lens
1 x User manual (English & Chinese)