The SL100 Series is ReeLight`s classic hub mounted lights, which are suitable for bikes without disc or roller brakesNo batteries required thanks to it`s electromagnetic technologyReePower continuously flashes while peddling and for 2 minutes after stoppingEasily mounted on all standard bicycles via axle mountSL120 backup power with capacitor and active technologyVery reliable safety light with ultra long life spanFlashing OnlyComboNot PublishedUPC/EAN/GTIN: 5708441001260