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 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
