Fully upgraded yogurt maker with notable improvements in fermentation temperature control, adjustable temperature and time ranges, appearance, inner bowl capacity, and power efficiency. Precise temperature control PTC constant temperature 360° water bath heating with a microcomputer that continually senses the temperature. It strictly maintains the set range, and testing shows it holds within a ±2°F tolerance for up to 99 hours. Timer control and presets Display shows temperature on the left (Celsius) and time on the right (hours). Four preset modes for quick use: yogurt: 40 45°C, 1 12 h rice wine: 32 45°C, 1 42 h natto: 36 45°C, 1 24 h fermentation: 21 48°C, 1 99 h For example, to make Lactobacillus reuteri yogurt, the fastest option is to choose rice wine mode and set the temperature to 38°C (100°F); the default time is 36 hours. 1.7 quart capacity and durable construction Square inner pot designed to maximize space and promote even heat distribution. The 1.7 quart capacity is among the largest single yogurt containers you'll find in this form factor. Made of 304 food grade stainless steel, it is easy to clean and durable.