PTC Thermostatic Heating and Fermentation The yogurt maker uses PTC thermostatic heating technology to maintain a stable, suitable temperature for awakening active probiotics. This reliable control supports consistent fermentation, making it suitable for both yogurt enthusiasts and beginners who want to prepare delicious, healthy yogurt at home. Smart Timing Function You can adjust the production time according to your needs. Negative Pressure Seal for Freshness The tightsealing cover creates a negative pressure state to help keep yogurt fresh and protect against outdoor bacteria, maintaining quality. The convenient exhaust design aids easy storage and preserves flavor and texture. The transparent lid allows you to monitor fermentation without opening, keeping yogurt fresh and ready to enjoy anytime. Large Capacity 1.6L Constructed with a 304 stainless steel inner tank, this yogurt maker has a 1.6 liter capacity to meet the needs of the whole family. You can ferment enough yogurt for everyone at one time. The stainless steel is foodsafe and easy to clean.