Blackburn click voyagerclick mars light set features click front 2 superbright white leds with focused optics front lens 15 lumen output compact and self contained silicone strap mounts on any handlebar no tools needed 2 cr2032 coin cells included 70hr steady 140hr flashing runtimes click rear 2 superbright red leds silicone strap mounts on any seatpost no tools needed 2 cr2032 coin cells included 70hr steady 140hr flashing runtimes