Citylite Automatic is a compact set of interlocking bicycle lights that emit a 220 degree light beam so that you will be seen from the front, rear and sides. Simply glide the front light on the handlebar and the rear light on the saddle-stem without requiring any brackets or tools. When the lights are separated they automatically turn on the previous chosen light mode i.e. constant or flashing and automatically shuts down when assembled avoiding accidental battery drainage while in storage. It will never get ripped of your bike because after every ride simply glide the two lights together into a single neat compact unit and slip it in the little pocket on your jeans - always there ready to keep you safe for your next ride.