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Bike Brightz have four modes of light control, including 1 constant light and 3 flashing ones—slow, medium, and fast. Attaches to a bicycle with zip ties. Zip ties are included in the sale. 2 AAA batteries are required to power the battery pack. Batteries not included. Measures L 4" W 1.5" H 1.25".
also available in red,blue,green and pink