UV-free special blue light: these glasses for blue light therapy emit UV-free blue light with low intensity and a narrow wave with a peak wavelength of 480 nm, which stimulates energy and improves mood, regulates the sleep schedule and the energy is stimulated. This UV-free blue light is safe because this wavelength avoids the spectrum near UV rays. Automatic timer with 3 levels: these light therapy glasses can be set to 15 min, 30 min and 45 min. With this built-in automatic timer, you can set the time based on the actual situation. it is automatically switched off as soon as the time is up. and it has a light indicator so you know what time you have set. Foldable and comfortable: these portable blue light therapy glasses can stay comfortably on your face for longer thanks to the light weight and soft, mat-elastic band design. You only need to wear these blue light therapy glasses for 15-45 minutes a day and it will take about 7 days or more before you see the differences. The brand new collapsible frame makes it easier to take anywhere and enjoy a treatment. Smart design: with the belt and the soft mat design, anyone can wear it comfortably and easily by adjusting the size of the belt to fit. It can be compatible with contact lenses or glasses, you can easily use it while reading, watching, working and cooking etc. and it will slowly rise to maximum brightness within 60 seconds so that your eyes gradually adjust to the blue light when you turn around. on it.