Adam Lipsonwrote a review of Lezyne LED Macro Drive Light - Pair on June 19, 2014
Familiarity: I've put it through the wringer
My wife was run off of the road by a car which resulted in her being hospitalized. She believed that if she had lights on her bicycle, the motorist would have had a better chance of seeing her.
I did some research and purchased these lights. They are very bright. You can see them from more than 300 yards. They can be set to one of three modes (bright continuous, normal continuous or bright blinking). They are easy to recharge using a USB cable. The mounting system is easy to use and they are both durable and rain proof. You can not beat these lights for the money.
While I am a purist who doesn't like anything on my bike other than water bottles and a garmin, I ultimately purchased a second set for myself.
As an aside, I lost a piece to the light. I call Lenzyne. They said, "No worries...we'll mail you that piece for free". You can't beat this product for the money!