Garmin Bike Light. Wherever you ride, ensure you're seen in broad daylight from over 1.5 kilometers (1 mile) away. This light can project a steady 800-lumen beam for ^1.5 hours. So smart, it can adapt to ambient light. and at speed to conserve battery. This light works well on its own or paired with your ^Edge® GPS bike computer. The choice is yours. Mount your light on your handlebars or helmet. 5 lighting modes, whatever the conditions.