?Non-Stick chassis , Also suitable for grinding spices etc Temperature adjustable:100 degrees C to 240 degrees C ?Professional Design thermostat automatic constant temperature heating uniform mixing baking ?Heat-resistant transparent cover, see see the heating process, the top four-hold ventilation system, so Shannon gas to diffuse your cafe ?2 Years Warranty .Refund:100% refund if item quality defective. SAFE WARRANTY - This coffee roaster is FDA and LFGB certified