Smart Connect is an innovative technology we developed in-house to control, simplify and customize compatible Lezyne LED lights. Using this free phone app, Smart Connect lights can be controlled and programmed either as a combo or individually. The simple interface of the app is used to control your lights on the fly, or to custom program the modes. If the front and rear are linked, the front light will now wirelessly control the rear light as you toggle through the modes, even if you are not connected with the app.