NO BATTERIES REQUIRED Front and rear light powered by a single dynamo High intensity light for low light situations Completely friction free dynamo High Power neodymium magnets Both lights feature steady on technology which stays lit even when you stop Both lights include E6-approved reflectors Very reliable with ultra long life Rear light intended for seat post mounting Black 1F/1R Combo Fork/Seat Post Not PublishedUPC/EAN/GTIN: 5708441007712