Model suitable size compared to the other with perfect electronic level, combining load the cartridge and gasification of the bottle; However, in manufacturing platisque "light" but pro bottle; flat water becomes gaseous ... and less expensive to progressively use - replaceable cartridge on the same principle as Butag ** gas cylinder, ie it is bought only once and as it is part of the pack that's cool .. - (for delivery: Fast, good size and undamaged)