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. Five Temperature Settings - 175, 185, 195, 205, 212 for choice. Food-grade Material - Heat resistant DURAN glass, 316 stainless steel infuser.