The Knog Pop I front light features a bright 35 lumen of LED light and 180 deg visibility for added safety. The front light serves up a super-bright SMT LED beam, designed to provide maximum brightness and efficiency, for maximum longevity and run time. The rear-mounted rubber on/off button is sealed from the elements and easy to use. A clever 3/4 second delay prevents accidental turn on, while short presses switch modes continuously once the light is turned on. The grippy strap mounts to any bar with a hook and loop assembly, no tools necessary. The strap will fit any bars or frame tubes that range from 22-32mm in diameter. The Pop I runs on a single AA battery which is included with the light.