Easy to operate with PTC heating for safety, quiet operation, and low energy consumption. Simply mix milk with lactic acid bacteria or yogurt starter, pour into the glass jars, set the time and temperature, and the machine automatically shuts off when finished. It can also be used for natto. Individual jars stay clean and protected from contamination. Adjustable temperature control and timer. Automatic program with an LED screen and responsive touch controls. The unit shuts off automatically. Temperature and time are adjustable (77 to 149 F; 0 to 99.59 hours). Large capacity with 9 glass jars. Includes 9 reusable jars to ferment more yogurt with the same power and time, saving energy and increasing efficiency. Ideal for a family or a week's supply. Includes a carrying rack for conveniently lifting all 9 cups at once. Healthy materials and durable construction. FDAcertified materials with BPA containers. Stainless steel body provides durability and even heat conduction, is easy to clean, and does not react with acidic foods. Transparent lid lets you monitor fermentation without lifting the lid and disrupting the process. Use scenarios: Family everyday yogurt: prepare a full batch in the 9 jars for breakfasts and snacks throughout the week. Batch prep for the week: ferment multiple jars at once to have readytoeat yogurt on hand. Natto or probiotic fermentation: suitable for natto preparation or other fermentation goals, while keeping jars clean and safely contained.