Red eye light with long cable to be used if you have an exposure front light the red eye simply plugs into the port on the rear and makes use of the same battery now they see you powered by smart port technology from your front light maxx2 model joysticks and upwards never buy a battery again new side illumination head for even greater light spread light solid runs from the front light cable length 10 metres includes moulded bracket for seat post compatible with six pack maxx d t