Features 1、Specially designed for the vocational rider or casual cyclist. 2、Simple to use, long lasting and security attached. 3、Easy assembly and release, installed in seconds before preparing to assemble. 4、Safe to use, remains firmly lockd in position, even during off-road use. 5、Durable and water resistant. 6、3 types of switch: full light, fast flash, slow flash. Be seen while Cycle, this spoke light is the perfect solution for night time safety when Cycle. Features: Specially designed for the vocational rider or casual cyclist. Simple to use, long lasting and security attached. Easy assembly and release, installed in seconds before preparing to assemble. Safe to use, remains firmly lockd in position, even during off-road use. Durable and water resistant. 3 types of switch: full light, fast flash, slow flash. Specifications: Material: Silicone Color: Red, Blue, Green, Multi-color (optional) Battery: 1 x CR2032 button cell Item Size: 125 * 38mm / 4.92 * 1.5in Package Weight: 22g / 0.78ounces Package Size: 125 * 38 * 10mm / 4.92 * 1.5 * 0.39in Packing List: 1 * Spoke Light Package List 1 * Spoke Light