The Brita Fill & Enjoy Marella filters tap water into soft drinking water in a short time. Fill the jug with water. This is very easy, because the lid has a handy filling valve. The water jug then filters lime and odors and flavors from the water. That way you always have filtered drinking water at your disposal. The jug has capacity for 1.4 liters of filtered water. You simply place the jug in the door of the refrigerator, so your filtered water stays nice and cold. An electronic memo ensures that you receive a reminder every 4 weeks to replace the filter cartridge. Handy, this means you don't have to keep this up to date.Note: only the Brita Filter cartridges Maxtra+ fit in this Brita Fill & Enjoy Marella.