rear light- buttons difficult to turn on, cycling through different outputs is not clear as it doesn't cycle sequentially.i think i have been successful in keeping it at the lowest setting to have a long run time but the light looks the same to me in daylight through the different settings.
front light - have had no need for it yet but light cycles sequentially so easy to tell what setting you are on but again the button is hard to press.
Great front light, great intensity and various modes. The same with the red rear light. I am a little disappointed that the rear red light is not rechargable.