The Busch Müller Secula Plus is the perfect dynamo powered LED rear light for seat stay mounting. LineTec technology creates a light band around the reflector with a patented lens system and high-power LED. Hence it has an extremely bright light exit at 320° for all round visibility. As with all German lights, it has a stand light which remains on while you are stopped at traffic lights, and over-voltage protection. Comes with head light lead.