While not the most powerful bike headlamp I've used, it performs quite well for its price range.
The built in rechargeable batteries for the head and tail lights are easy to charge, as long as you can keep track of where the short charging cords are. They do use USB to charge, making it necessary to use an adapter if I want to charge them in the garage near my bike, but it's a minor issue.
The only real problems I had were the range/brightness of the light, and mounting the taillight. While the light brightness works well enough to allow others to see you, and does light up the ground in front of you, it is not bright enough to make higher speeds safe to use, though the only lights I have used that would be safe, cost far more and had much larger battery packs.
The other issue, mounting the taillight, is mostly due to my bike's seat post. My seat post is not a standard size, so the mounting strap had to be stretched a bit in order to fit, something I think may cause extra wear and tear on the strap.
Still, the headlamp and taillight are both good quality, and there was no shifting or flickering while I was riding on rough roads. The addition of the head strap, so that the headlamp could be worn on my head is a nice addition, and I will likely be using that more often than mounting it to my bike.
This product was provided for free or heavily discounted in exchange for my fair, honest and unbiased review. I received no financial compensation for this review. #BrightOutdoors