I just got that little extra fire today, happy with my purchase I hasten to read the manufacturer's instructions, or contrary to the site description (which made me chose CE product over another !! ) autonomy is only ONE HOUR !! not 2 or 3 as indicated on the site because the tank is the 0300, a consumption 0.300 l per hour! For a range of 2 to 3 hours as specified in the site, and a consumption of 0.500 l, so it was expected a tank 1 liter 1 liter 500 !!! If I had known that the autonomy of this product was only an hour, I will not get it bought.