I ride at 6AM 3 times a week consistently over the year so its dark most of the days. Having lights is a must. I have gone through probably 10 of various brands and always come back to Niterider. They last as long as others and have some good features. The water resistance works as long as seal on the USB plug stays closed.
This light can run for an hour at maximum brightness (which is almost too bright) and it is VERY good at lighting the way on dark trails or streets. It can be easily attached and moved between my bikes or my helmit. I'm thinking of getting a second one.
The RF interference from the Lumina 900 shut down my computer. Unable to move it far enough away. Had to revert back to my less powerful Lumina. I would have returned it but had tossed packaging and paperwork.
This light is a great value for the quality of the light. Beam is very bright and holds charge as stated. Only wish the beam was a bit wider, but considering the cost compared to other more expensive lights this is a great buy!
Well-built light. I'd rate it 5 stars except for the flash choices. I bought this for a daylight safety light. The flashing choices are two solid light on with slow flash, high beam with fast flash. I would have preferred a lower beam rapid flash, as I see with a lot of other bikers. Nevertheless, I'd recommend as a good light, especially if you are doing night riding.