Color Changing Lens Tester Blue Light Proof Detector Purple Light Glasses Tools Instrument Picture Measuring Tapes & Rulers 15 LED purple lightCheck if

15 LED purple lightCheck if the lens is a discoloration/anti-blue light lens

Product description：

Arriving Day: 15-35 Days[SHORTDESCRIPTION]  Specification standard method: w * L * D (full length of bag)L = total lengthL2 = practical lengthL1 = pocket lengthL1 = the length of the bag mouth varies according to the size of the bag

Silver sandblasting

and high sound

Color Changing Lens Tester Blue Light Proof Detector Purple Light Glasses Tools Instrument Picture Measuring Tapes & Rulers 15 LED purple lightCheck ifShips 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