Food grade ABS material, green & healthy Give good bean sprouts in just 3 days Save electricity with PTC heating Regulate temperature, pressure, and humidity for thicker bean sprouts Short circuit protection, safe for use. Prevent water spillage with automatic drainage spill water Eliminate the hassles of changing water with fully automated water recycling system 360-degree sprinkler, to prevent uneven germination of beans 3 different seasons modes (Spring/ Autumn, Summer, Winter), you can make your own bean sprouts all over the year 2 layers design, save electricity, time, and money, 1 machine = 2 × normal single layer machines Convenient and easy to sprout your own at home.