This is my second Origin8 and both have been great. It was really easy to mount on my seat, took about 30 seconds. The light is really bright and has a great triangular beam so (I hope) it is more likely to catch the eye of those who need to see you. I have a one-hour bike ride home from work, and the light has never lost its charge, including when I used it two days in a row without recharging. I've never tested it to see how long it will go without a charge. I don't charge the light over the summer, and one time I had to use the light unexpectedly without having charged it for months--no problem, it worked just fine. I wish there were a way to mount this on a helmet, but it's fine on the seat. Definitely recommend this light.