With this front PETZL I found what I was looking for my nocturnal outings of running, I needed a face, a good battery, which lights without light beam. With this model, which adapts its power according to the ambient light, no need to manually change in intensity, since I alternate the lit areas and dark areas when my sessions. she adapts herself to the environment and optimizes the battery life. She forgets quickly running, because the weight is reasonable With various settings that are parameterized via the computer, it meets all the needs (lighting for DIY, trail etc ...) 4 stars because of the price that I find a bit excessive for a frontal But in the end, disappointed.
