Mineral rich VitaClay is slightly porous and has low thermal conductivity which absorbs heat while maintaining a steady temperature. Natural nonstick organic cooking surface is unglazed, so no chemicals or aluminum contacts food. 4 settings - Rice, Brown Rice, Stew, and Soup - with programmable cooking time from 30 minutes up to 12 hours. Set-and-forget feature. Double lid design maximizes the steaming quality to create tender and juicy dishes. Includes: recipe booklet, rice paddle, and measure cup. 1 year warranty.