It should be emphasized also the excellent illumination which also takes place very smoothly. This is especially important when I jog / Winter autumn in the forest in total darkness for me. Especially Class I personally find the "Reactive Lightning technology" thus controls the lamp brightness automatically. If I am, for example, still in place with street lighting on the road, the intensity of the lamp is turned down - times in the woods or field and takes a look into the distance will increase the brightness and it has a good vision.
With the "OSByPetzl" software you can further customize the "Reactive Lightning Technology" to their individual needs.
The battery life is very good - the Li-Ion Battery Maintain the "Reactive Technology Lightning" loose 3 separate runs of about 1.5 hours in the forest. However, the limits of capacity, I do not want to go because I want to avoid standing in complete darkness in the forest)
However, the battery is also my only major criticism: Petzl sets at the Li-Ion battery on a battery pack with a proprietary connector. In the pack probably a standard seems to be built 18650 battery as this is, however, connected via soldered wire must in case of replacement, the entire battery pack to be replaced. The lamp can be even with standard AA batteries to operate but with reduced performance.
