If you using using your phone, pc and laptop for a long time on work, you maybe search for a solution to make eye strain easy for you. For some people flux work fine. I have installed it on my desktop and laptop both. If I can’t get it on new device I can feel what is missing in my system. I bought Gunnar spectacles from Amazon India. First of all The package come with full of dust but packed well (Amazon packed everything well). I didn’t have any problem with packaging because product was safe in ......