Planet Bike Blaze 2 Watt Micro Headlight Made using sustainable methods Made using high quality materials Tested to ensure quality and durability Delivers 139 lumens to light up the path and make cyclists visible both day and night High and low power beam along with SUPERFLASH mode Optically-advanced lens provides superior beam pattern QuickCam bracket mounts, adjusts or removes without tools Up to 64/16/10 (flashing/low/high) hours runtime on 2 AA batteries included