A demo video by Petzl explaining the breakthrough technology of the Petzl NAO head torch with its light Reactive Sensor it automatically adjusts the light output of the 2 LED's to give just the right amount of light for the right application which saves battery life and allows you to get on with your chosen activity. The sensor reacts to changes in ambient light and distance from the head torch and then provides the light you need. Powered by a Li-Ion battery pack it comes with all you need to charge it from USB. You can also download the FREE Petzl programming software for PC or MAC and then set the NAO up so that is reacts the way YOU want it to.
