Stainless steel liner: The stainless steel liner is durable and rust resistant, ensuring food hygiene and safety. It also provides good thermal conductivity to support uniform fermentation of yogurt, natto, and rice wine. 1.7 L capacity: Large capacity of 1.7 L allows a full batch at once to meet the needs of the whole family. Suitable for family gatherings or small gatherings of friends. 7 subcups with lids: Seven subcups, each with a cup lid, easy to carry and store. Ideal for breakfast yogurt on the way to work or rice wine for an outdoor picnic. Automatic constant temperature: Automatic constanttemperature control precisely maintains fermentation temperature, ensuring the fermentation quality of yogurt, natto, and rice wine, and producing delicious food with delicate taste and rich nutrition. Practical use scenarios: for preparing yogurt or natto for daily meals, making rice wine for outdoor picnics, or hosting small gatherings with family and friends.