Over the years I've owned a few bicycle lights. But, this one by far has been the best. The lights I owned were cheaper, but the spread of light was inadequate for my riding. I live in the mountains and often on a winding track a rider needs better illumination, more specifically flood beam. Its illuminates a far greater area. Moreover, the 3 different types of brightness help in conserving battery as well. Overall I would say that this particular light is what I wanted.
The rear light is simply awesome. If someone is on the lookout for a nice combo package of lights then this definitely ticks off all the parameters for an effective light.
The front light lit up the road!!! Carries modes allow for use during different times of the day and night. Strong mounting, easy operations while riding make this an ideal choice.
The rear light is super bright and friends vouched for it. Lot of modes but you may settle for the one you like instead of constantly changing.
Not sure about the life of the product yet but so far seems to be a great purchase.