See.Sense. intelligent bike lights offer the rider a new take on staying visible whilst on the road. High performance sensors measure changes in environment and motion to deliver a brighter and faster flash depending on your perceived level of danger. For example, the lights will flash brighter and faster when at a roundabout or junction, or if car headlights are detected as approaching. See.Sense. lights are available in a range of brightnesses and as a set or as rear light only.