
I installed to protect my child's eyes from blue light twice (BS blue light protection is already activated) This product contains a small blue light to check the filter and works fine. The screen fits perfectly and is easy to install with this frame. The only problem is that you cannot use this screen under sunlight as the screen only shows blue (I don't let my kid use the tablet outside anyway). Overall I am satisfied with the product as the main purpose is to protect the eyes.

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