CATEYE SYNC CORE / SYNC KINETIC BLUETOOTH CONNECTED BIKE LIGHT SETCatEye: Dynamic, controlled visibility The definitive starting point for the CatEye SYNC consumer Switch both lights on off with the power button of the SYNC Core front light Additional lights can be added and fully customised for enhanced, dynamic, controlled visibility, day or night SYNC Core Mode: Output, Runtime High: 500 Lm, 2 hrs Middle: 150 Lm, 9 hrs Low: 100 Lm, 15 hrs Daytime HyperConstant: 500 100 Lm, 18 hrs Flashing: 100 Lm, 130 hrs