Blackburn's Flea Headlight/Taillight Combo is the perfect setup for visibility and safety. You get tiny, ultra-bright lights thanks to 4 brilliant LEDs front and rear. Plus, both lights have built-in rechargeable Lithium-Ion batteries for convenience and excellent run times. There are also hook-and-loop straps for simple mounting. The taillight also has a belt clip.
Headlight Run Time: 3/6 hours (steady/flash); Taillight Run Time: 6/12 hours (steady/flash)
The Flea lights also have a unique secondary charging system so you can recharge off almost anything, like standard AA batteries, C-cells, whatever you have. Just stick the clever magnetic leads to the battery terminals and leave the Flea to charge. The auto shutoff prevents overcharging.