Here is a Smart Kitchen Sous Vide Circulator that lets you cook delicious meals like a pro. It heats and maintains the water temperature, precise to 1/10 of a degree. Made out of stainless steel, this device can prepare a full meal conveniently. It can maintain the proper temperature for up to 99 hours.
The Smart Kitchen Sous Vide Circulator is pretty easy to use. Just turn it on, set time and temperature, and go. The above video gives you a better idea how this device works.