Tartar is the enemy of iron but not that one. It's amazing to think that the camera reaches remove the limestone itself through some sort of technology! Warning however the first time you empty the tank limestone. it should not do so hot, and it runs a little. Obviously nothing to say about the setting, ultra simplified, which is a little disconcerting. There are more full adjustment but basically "fragile" or "very hot". in English on the device (Delicate). A huge time saver when back lot, which is the case in a large family like mine, with 8 people including 6 children! iron has been running non-stop two hours earlier with a single load of water for steam ..