Cateye Nima Rear Light
The Nima lights’ semi-transparent casing lets the light shine through, yielding greater side-visibility. Handlebar or seat post, Nima mounts in seconds using the included heavy- duty band. Nima lights have 4 modes: Rapid, Pulse, Flashing and Constant. ClickTecTM ‘push & click’ simple operation makes it easy to change modes. Both the front and rear versions are available in Chrome Black, Matte Silver and Matte Red.
it does work, but the construction is low quality. Its so difficult to lock it back after replacing batteries. Not bright enough. I have other similiar (size and price) that works better.