Excellent value for money, and in line with what I expected ie no plastic element inside. No resistance that exceeds that is all that heats the inner core, which should facilitate scaling. It can be heated from 30 cl or a cup. The only snag in this case (which explains the star less) are less full and the desired temperature is exceeded (obviously) so best to stay close to watch as we quickly exceed 15C. Another negative point, the few movable cover for cleaning the top of the carafe narrowing. Otherwise I am delighted with my purchase, very simple programming, it turns 360 on its base, achieving rapid temperature and maintaining the efficient hot. Besides very pretty. I recommend without reservation.