It is an external light with a powerful horn!! Do not put it on a child's bicycle because they consider it a toy and will keep playing with the horn all the time.

Of the 3 I got for all of us, one after the first ride had low light and after the second charge it burned out completely, it doesn't work. The other two after the first/second ride need charging with the strap coming apart even though it's not summer and they're not exposed to the sun. They became useless. Good light, nice horn but in the end they didn't last even a month...

Strong light. Loud horn. The battery lasts for several days. I charge it with the USB port it has, but I have the impression that it also charges a bit with the sun.

The light is, I think, a bit blinding for drivers. Of course, the same happens with most motorcycle lights (they generally shine much higher compared to cars). I removed the wire-switch that powers the horn, because I don't intend to use it. It is supported with a rubber strap with holes on the handlebars. I even remove it at home when I'm not using it, as otherwise it seems that the rubber strap will wear out.