I have some rechargeable USB rear lights as well as this, I prefer the electron light, the batteries in this thing last a long long time and when they do run down the light becomes a little weaker but does not stop, unlike my USB ones.
The light is very very bright and the ability to rotate the unit thru 360 degrees allows many mounting options
Amazing light! Very bright and easy to fit. Just remember not to put it in your bag as a power button is VERY sensitive - not a problem for me since the light is staying attached to my bag at all time.
Really impressed with this light I am sure this could be seen from space it is that bright. Just received the front version aswell and have to say there is no way I won't be seen on the roads at night. I cannot see any other lighting system out perform this combo at this price point or even higher. They even come with batteries so are good to go two mins after opening the box.
Unbelievable performance at an amazing price.
It makes you highly visible, but turns on too easily when stuffed in your bag.