The Niterider Cherrybomb 35 rear light is designed to get you seen by other road users. By incorporating a unique multi-directional collimator specifically designed for cycling, the Cherry Bomb 35 maximizes visibility by dispersing light to the sides of the rider as well as to the rear, effectively eliminating blind spots. To further rider safety & visibility, the Cherry Bomb 35 employs a custom made, built in reflector which allows the rider to be night time visible even when the taillight isswitched off. Clip & bike mounts are included for flexible mounting options. Daylight Visible Flash (DVF) Visible up to 1 mile Internal reflector = visible if light on off mode Easy to operate AAA batteries Super bright day time flash mode Be Seen by cars = Be Safe FL 1 Standard IP64, water resistant Lumen Output:35 Run Time: Up to 100hrs Weight:82g Battery: Alkaline AAA x 2