Torcia Petzl Tattica Da Elmetto Strix Vl Petzl TanHeadlamp keeps hands free for working efficiently. Numerous carry options: on the helmet, on the vest, on the head, or around the neck Double rotation system of the body and head of the lamp allows great freedom for orienting the beam: 180 horizontally and 120 vertically Constant lighting guarantees lighting performance that does not decrease as the batteries are drained; then switches to reserve mode Knob manipulation is noiseless, quick and easy,