The Petzl R1 extension cable for NAO RL offers ingenious practicality for light systems. Specially designed to accommodate the NAO RL battery away from the headband, it opens up new possibilities in winter conditions on the mountain or when cross-country skiing. Tank top the battery in a warm place close to your body to preserve its service life while keeping the luminosity at a high level. At the same time, it reduces the weight on your head and increases your comfort on long adventures.