1 of 2 people found the following review helpful
a triumph of style over substance,
This review is from: Lezyne Femto Drive Front/Rear LED Cycling Light Set 2014 (Misc.)
Lights would switch themselves off when you went over a small bump. Dangerous when its the back light as you aren't always aware it has happened. Generally the switching mechanism isn't very robust and could be frustrating to set the mode. They are now in the bin.