The Petzl NAO Belt Kit is designed for use in situations when the standard rear battery/power mount for the head torch is less stable than required; such as running or downhill mountain biking.
The supplied product includes an extension cable and a USB port cover, which can also be used as a belt clip to secure the unit. As batteries perform better when they are warm the Belt Kit can also be a useful allay on winter mountaineering routes, where the unit can be kept inside your jacket to help maintain high performance.
Nao Extension cable
USB port cover / belt clip
Please note: does not include the Nao torch or battery unit shown in the image.