In recent years, earmuff headphones have been used for commuting for nearly a year. I feel that listening to music with earmuffs is very comfortable, and it can also be slightly colder than the top of the head. In winter, the ear can be used to keep the ear warm, and count it. I want to earmuff headphones If there are manufacturers willing to invest in research, there should be a lot of convenient features to play. However, just now I saw that there are manufacturers who have launched a combination of gods such as Kong Ming: iGrow with earphones with hair function! The principle of iGrow products is not very complicated. It is equipped with a red LED helmet that can stimulate the growth of hair follicles. According to the report, it can be used for four times a week, about 25 minutes each time, and the density of hair can be increased by 35 percent in 16 weeks. Cheap, simple, no side effects, no prescription for the doctor, everyone can send more at home. Don't look at this design seems to be a spoof of cheap sci-fi movies. At present, iGrow has passed the approval of the US FDA, and will soon appear in the market like a blood pressure machine or a weight machine. As for the sound quality of the headphones... Well, if Chevelle Fu can get it, you can make a more professional analysis! 