NO BATTERIES REQUIRED 1 Watt Power LED Solid beam steady headlight Both lights feature steady on technology which stays lit even when you stop Friction free dynamo High Power neodymium magnets Electromagnetic technology Very reliable and ultra long life Rear light intended for rear rack/carrier mounting 450g for set Black 1F/1R Combo Fork/Carrier Mount Not PublishedUPC/EAN/GTIN: 5708441007705