So far these have worked great. My commute is app. 45 minutes and I have been charging them app. once a week since the days have gotten shorter. Would estimate about 3 hours total running time on flashing mode. They are bright and I have not had any cars pull out in front of me on side streets since using them. Little concerned about the longevity of the elastic bands used to secure them to my bike frame. That's about the only thing that I would consider redesigning with these. They have addressed a longtime concern of mine to be visible from the side while riding at night.
Just enough distracted drivers out there for your entire lifetime.TWICE since I've used Beacon Light careless drivers overran the Stop sign by 20-30 feet, stopping before I was injured. Basically essential.
I purchased this seat bag to replace a Blackburn bag I've used for years. I shopped other brands but decided on buying a Blackburn bag again. I went with the large size, its a bit bigger than I need but still not too large. The water resistant material, practical inner design and great zipper all are nice features. This bag also secures tightly - no worries of it becoming loose. In use for a couple months, no complaints. Great looking bag as well.