Engineered for more than just lighting your way in the dark, the multifunction COB LED Bike Flashlight features strong 150 lumen light. The 150 Lumen LED delivers bright, long-lasting illumination. Light settings include high, medium, and strobe functions. Regardless of where you want the light mounted to your bike the light is adjustable up to 180 degrees. Detachable, you can grab the flashlight off your bike when needed and utilize the carrying wrist strap. The COB LED Bike Light runs on three AAA batteries that are included but you might need more batteries, so don't get stuck paying more for AAA Batteries