During the day you use the mirror to reflect sunlight. On the back is the silver side of a reflector sticker like the ones on the back of trucks (silver/red). If someone is searching for you with a light it will show up from a broad range of angles to the mirror. The mirror would have to be pointed at the light to return a signal, the reflector doesn't, at least not exactly. The idea would be to use the LED in one hand to attract attention and the reflector to show up in their light from a distance. You can see the LED blinking from a long way off.
I got a bunch of them at the DMV (DETRAN in Brazil) I also put these on the back of my medallion type compass'. The glue on these is really strong. They just help you show up at night. Mac
Bookmarks