These lights are great! I bought a pair from
Wiggle and haven't had any problems so far.
I have only used them in the steady mode and they still last forever, give great allround visibility and drivers can't help but see you.
Although the pictures show them mounted to seat stay's and clothing, when I read the instructions they said that they were not to be mounted to seat stay's or clothing and must definately not be bent!!
I mount mine to the seat stays
Other than that no probs.