DetailsBlinky 3H:~ 3 Super-bright LEDs and built-in parabolic reflector provide visibility for up to 1 mile. Flashing and steady mode. Ultra compact case is weatherproof, light weight and durable. Includes self-leveling helmet mount, seat post and seat stay mounts. Reflective lens and exclusive Scotchliteª side reflective strips for extra visibility. Up to 100 hours of run time on 1 AAA battery (included).