Specifications of 2X-4X:
Focal length: 260mm-360mm
Material: ABS plastic, Optical lenses,Aluminum Alloy
Magnification: 2X-4X
Weight/pc: 220g
Type: Hand-free Magnifier
Work Distance: 0-3m
Lens diameter: 35mm
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Specifications of 1.5X-3.8X:
Material ABS,acrylic optical lens
Net Weight/pc 183g
Magnification 1.5-3.8X
Pupillary distance 270-450mm
How to use:
The view with + 3 degrees focusing range, how to adjust the diopter approach:
1) Close your left eye, turn the right focus wheel(see figure), so that the right eye can clearly see the TV screen.
2) With the same operation, adjust left focusing wheel, so that the left eye can clearly see the TV screen.
3) And then his eyes while watching, and gradually adapt.
Note:
1) Use hard objects to avoid being scratched lens, do not touch the mirror.
2) Becomes dusty, please wipe gently with a lens cleaning cloth.
3) Grease contamination is they are can be used to dry after washing with soap or detergent.
4) Does not directly at the sun watch or strong light sources in order to avoid burns the eyes.
