Rear lights serve the same purpose regardless of whether you are riding at day or night, to keep you visible to other road users. Cateye's Kinetic Technology takes that visibility to the next level. A built-in accelerometer detects sudden changes in speed (such as heavy breaking) and switches from flashing mode to one continuous beam. This change in mode alerts other road users to your change in speed and position on the road, making you more visible and crucially safer. Watch the video below to appreciate this technology, or shop our Kinetic range.