Night glasses PC glasses with super blue light cut have finally arrived in Japan!! Cuts 99.9% of blue light in all areas! Blue light has a serious impact on your body clock. Nighttime blue light has been proven to reduce melatonin secretion and disrupt sleep cycles. ■ Recommended for people like this! 1. People who use smartphones and computers late at night and have trouble falling asleep 2. People who use smartphones and computers after turning off the lights before going to bed 3. People who tend to play with their smartphones in a dark room 4. People who often watch movies in a dark room ■ Cuts all areas of blue light spectra479 can cut an average of 99.9% of blue light in all areas. ・280 - 380nm: 100% cut ・Blue light (380 - 490nm): 100% cut ・Blue light (380 - 500nm): 99.9% cut ・Blue light danger zone (450nm - 510nm): 99.8% cut There are many blue light cut glasses that claim to cut 50% or 90% of blue light, but they don't specify which areas of blue light they cut. It is important to know how much blue light in the 450nm - 510nm range, which is considered harmful to the eyes, is cut. Users have reported that it reduces eye fatigue and that their eyes are hardly tired at all. They also no longer experience headaches from eye strain and can feel a difference in how tired they are after work. Furthermore, some people say that cutting out blue light from the surrounding light makes them naturally sleepy. Spectra479 - 99.9% Blue Blocking Amber Glasses for Sleep - Medium Adult Size Nighttime Eyewear - Special orange glasses help with sleep and relaxation *If you experience any eye problems, please refrain from using this product. I have kept it at home unused after purchase. I opened it for confirmation, but it is a used item, so please understand this before purchasing. Returns and complaints are not accepted.