6-in-1 Control Base - Boil, Black/ Herbal, Oolong, White, Green, Stop/ Off.User-friendly Design - One-click pre-programmed temperature, stainless steel removable infuser, button with lights Indicates and stop by one-click anytime.Auto Keep Warm - 60 minutes automatically keep warm feature and auto-shutoff.Food-grade Material - German schott duran glass, 316 stainless steel infuser, with FDA certifications.Satisfaction Guaranteed - 30-day money back and 1-year warranty.