Petzl NAO

275 lm, IP X4, 135 m, 2600 mAh Li-Ion, 187 g With REACTIVE LIGHTING technology, the brightness of the NAO headlamp adapts instantly and automatically to the environment. The headlamp thus provides maximal brightness (7 to 575 lumens), a longer burn time, along with greater usability and fewer manual interventions. The rechargeable Lithium-Ion battery is suitable for frequent use.