This versatile stick-on LED reflective marker light has dozens of applications. The hook & loop fastener on the marker allows the light to be attached to bicycles, clothing, backpacks, etc. Add visibility and safety while jogging, walking, bike riding, hiking, boating and more. With visibility of a mile, you can easily be seen. What's more, the marker acts as a reflector even when the LED light is off. * Flash or glow mode, visible over one mile * 100,000 hour L.E.D. life * 100 hour battery life (1 x CR2032 3V coin cell included and replaceable) * Reflective even when turned off * Rugged shock resistant design * Versatile hook & loop fastener * 6 x 1.25 x .25 inches