The Sous Vide Professional CLASSIC Series Immersion Circulator is the legendary machine that changed kitchens forever. The breakthrough innovation of this immersion circulator helped pioneer the realm of Sous Vide cooking. The Sous Vide Professional CLASSIC Series is the standard behind many cookbooks and groundbreaking recipes. This thermal circulator offers maximum flexibility and clamps onto any tank with round or flat walls that can hold up to 30 liters (8 gallons) (120V). With its one-touch control it enables you to quickly set or adjust the cooking temperature. Also, its simple selectable high and low pump speeds provide precise liquid circulation control.