4 Pack Blue Light Blocking Reading Glasses DS9101 feed-color-Blue/Green/Black The performance of blue light

Description

The performance of blue light blocking:block 28% within 500nm

Frame width about 5 1/2 inches (139mm)

Temple length about 5 1/2 inches (139mm)

13 inches(approx

4 Pack Blue Light Blocking Reading Glasses DS9101 feed-color-Blue/Green/Black The performance of blue lightPlastic frame with spring hinges Block 98% blue light, serious color distortion Frame width about 5 5 16 inches (135mm) Lens width about 2 1 16 inches (52mm) Lens height about 1 3 16 inches (30mm) Bridge(DBL) about 9 16 inches (15mm) Temple length about 5 1 2 inches (140mm)

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