NO-BAD-LIGHT – protects eyes from harmful blue light emitted from screens of the electronic devices. Blue light - the strongest light within the visible ray spectrum and it has enough energy to cause eyestrain and dry eyes. It can also misalign your internal body clock as it suppresses the secretion of melatonin – you can not fall asleep well. Protects your screen against scratches. Bubble-free application. Perfect fit thanks to MyScreen's laser cutting technology. Simple and.