Perfect for biking, hiking, or even the very large world tour ...

The bulb is small and light and to always have with us. Ideal for tent construction in the dark and on cycling holidays etc. So I am deeply impressed by the small part. The CR2032's in large packs for little money. Environmentally friendly, the course not, because not rechargeable. But they have a big advantage: the cells have a low self-discharge and function even after prolonged non-use and in very cold weather. From the luminosity I was pleasantly surprised. In addition, the lamp, unlike many other Headlights, completely waterproof (IPX6). The lights must have :) And at the current price of only 12 ... I paid hab'noch significantly more when purchasing (19.90).