Get the ultimate, state-of-the-art bicycle safety flasher. With 5 ultra-bright, high output L.E.D.s visible from all 3 directions, the Radical II has proven to be the best in safety flashers. Included in the quad-mode Radical II system is a battery saver mode with up to 50 percent more battery life, allowing the cyclist to further enjoy night time riding. Along with the battery saver mode, this ultra-bright flasher lets the rider to choose from steady flash, radical flash, or constant beam with a touch of a button.