More compact, modernized version of the HTrace original \n Durable dynamo powered lights are instantly noticeable, and work with any 6volt, 3watt dynamo hub \n LED lights give strong, steady output, and have builtin reflectors for extra visibility \n Equipped with the Standlight function which keeps the light lit when stopped for up to 3 minutes \n Fulfills a number of European road traffic regulations \n Durable dynamo powered lights are instantly noticeable, and work with any 6volt, 3watt dynamo hub