Like the original versions developed for combat pilots to aid in cockpit visibility on low-light night missions, these inexpensive, compact lights are a convenient way to illuminate a handlebar thermometer or reference a map during post-sunset navigation. An easy to use push-button can be operated with one hand to activate two flashing modes or an always-on setting to provide bright, usable illumination without sacrificing night-vision. Elastic finger strap fits over most gloved fingers. Three replaceable AG10 button batteries (included). 1.75"×.5"×.5". 4 lumens. Available in Green, White and Red.