Serfas' TSL-1000 is a lightweight, compact headlight with 1000 lumens for phenomenal illumination. The CNC aluminum body is tough and features Serfas' Ram Air Cooling design to prevent overheating. Four different modes and a wired remote switch make for quick, easy adjustments, and the included handlebar and helmet mounts let you position it where you need it. Plus, the battery pack features a USB outlet to charge other electronics on-the-go and an integrated 35 lumen Thunderbolt taillight so you can be seen from the side or from behind. When the sun rises, bring the TSL-1000 back to life with the wall charger and store it in the ballistic nylon case until the next night out.