Color Changing Lens Tester Blue Light Proof Detector Purple Light Glasses Tools Instrument Picture Foot Protection simple and fast

simple and fast

1 led downlight

1x Phillips screwdriver knife（PH2*100)

Packing PE bag or carton

Improved range-based accuracy

Color Changing Lens Tester Blue Light Proof Detector Purple Light Glasses Tools Instrument Picture Foot Protection simple and fastShips FREE Handling Day: 1 3 Days, Arriving Day: 15 35 Days[SHORTDESCRIPTION] 1. The color of the lens changes a few seconds after the color changing lens is placed in the test area 2. Press the anti blue lens against part of the blue light test card and put it in the test area. The unblocked part of the blue light test card becomes dark 3. The color of ordinary lenses does not change no matter how long the exposure 4. 3 kinds of lens contrast 5. 30s