IN-BUILT THERMOMETER: the device is featured with a thermometer with both Fahrenheit and Celsius scales MULTI-USAGE: the device is applicable for distilling alcohol, producing essential oils, and other substances COPPER TUBE: the cooling coil is equipped with a copper worm pipe, which is food-grade and non-toxic SIMPLE OPERATIONS: this distiller is perfect for both inexperienced and expert distillers 100% GUARANTEED QUALITY: Great customer support with a flexible return policy and a money-back guarantee.