Anti Blue Light Test Card 10 Pcs Square Testing Card Used for Eyeglasses Test
10pcs PVC Anti-Blue Light Test Card Test Light Glasses UV Test Accessories Card Blue Light Detection Card Generator Card

Features:
Reusable, irradiated test cards will recover in 1-2 minutes.
Use an anti-blue light emitter to shine in the white square below. The for stronger the blue light, the deeper the discoloration.

Description:
brand new & high quality
Color:Blue
Size:60*40mm/2.36*1.57"(approx.)
The white area is the test area

Package include:
10pcs Anti Blue Test Card