I only have a few weeks back on this article so I will not comment on its longevity. In any case, in terms of use, this is an article very easy and very convenient. Cooking rice, vegetables, preparation taste. The booklet provides guidance with respect to the water level is possible to increase the latter being easily program. Once you find a dosage, I can leave the device in all serenity work in my place unattended. What I wanted for lack of time!