This is a dynamo by another name with an LED light designed to run off a dynamo (i.e,. built in capacitor). Interesting dynamo design. Seems like a good LED...
I have found that the only effective day time lights must flash. The multi LED Cateye units seem to work and are reasonably priced and have good battery life....
My headlight is the Cat Eye SingleShot Plus for the bike. It's the brightest I could find that didn't need a separate power pack, and is rechargeable, so...
I agree on the flashing during daylight - front and rear. I also found that 12V systems with a external battery are the brightest and worth the extra weight...
I use Whelen Raider LIN6 police vehicle lights. Highly effective in daytime, which is why police vehicles use them. No LED bike light comes even close. There...