Product DescriptionJust wrap the "tail" of the light around your handlebars or seatpost, or helmet vent or whatever you need to, and push the button to choose between steady, flash, and wild modes. That's it, you're ready to ride safe! Each light has two LED bulbs, the front bulbs are white and the rear are red. They are powered by two CR2032 batteries each, which are included.
Mtbr Bike Lights Shootout - over 50 bike lights reviewed, photographed and measured here.