The Lezyne Connect Smart Light Set is the most advanced cycling light combo available. The Connect Smart Pair comes equipped with Smart Connect wireless technology. This pair of lights can be quickly programmed and customized by the companion LED Ally phone app. Once programmed and paired, the front light wirelessly controls the rear light when toggling through its modes. Setup only the modes you need, and up to four mode-sets for whatever type of riding is planned, day or night.