I tried wearing it on a helmet, but it slips off easily. The belt is easy to come off from the main body in addition. The resin cover of the light part is easy to come off. Three or more points, I hope you improve.
I could not change the size of my head and it was difficult to install from the top of my helmet. Furthermore, just dropped from the height of the waist, the plastic part on both sides crushed and it was unusable. I thought that it was too brittle. I am sorry for being satisfied with price and brightness.
I think that overall it is not a bad product! Both the brightness and the possession of the battery are satisfactory ... But, in my case I often carry it in my pocket but it is always enough to say, power is on (/ _;) Finally I took out the batteries and put them in my pocket! Previously, I used 12 LED type, but I feel I did not have the power on my side because the switch is on the side ... In my case I'm overworked so it's my way I do not think that the mounting part of the upper band has broken __ (..) Mr. ~, price etc. are also affordable, so I am considering purchasing! After all, the brightness is attractive! (^ ^)
Very bright, convenient head position can change angle. I think that it is good if there are more colorful colors as women use it in design. I wish I could hang it on the neck with the back side as a rock band.