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.pros: compact size, charges by usb cable, easy to install, easy to remove yet very stable, fits different sized handlebars.cons: the only con I found is that because of the shape of the light, it's impossible to direct the beam in front of you. The light spills in a wide angle; it even comes out of the sides. So if you are biking on a dark road, it's hard to direct the light to the area just in front of you. This is such a major drawback to the design of the light that I gave it 3 starts...adequate.Bought this for my boss' going - away gift. He loves it. It's wicked bright!WorthilyGreat light. Very very bright. Stays put on handlebars.Love the usb plug charger, very convenient. This thing is SUPER bright, and the battery easily lasts my 46 mile round trip commute. Highly recommend.Quick charging and lasts 5 hours on flashing mode.Super bright, easy to use, and charges with USB.