CatEye Reflex Rack Mount Taillight/Reflector Description: The CatEye Reflex Rack Taillight with reflector mounts to rear racks and provides active and passive visibility. Features: Rear rack light with a built-in reflector Compatible with 50mm, 80mm and 19mm center mounts Run time: constant 220 hours Low battery indicator Specifications: Brightness: 35 Lumens (Rear) Battery Type: AA Run Time: Up To 220 Hours (Rear) Beam Color: Red Color: Black Weight: 106g (Rear)