40 millimeter stainless steel conical burrs designed to minimize grinding heat and protect the essential oils in the coffee bean, creating consistent coffee grounds and optimal flavor extraction. [ 31 Precise Grinding Settings ] - 31 precise grind settings from the finest Espresso to the coarsest French Press Grind. [ Clear and Concise LCD Screen ] - Precision digital timer allows you to adjust grind time giving you a perfect dose every time. [ Easy to Clean ] - The coffee grounds residual cleaner is good for cleaning the residual coffee grounds. Please press the coffee grounds residual cleaner after each use . And the built-in brush, removable upper burr, hopper, and chamber for easy cleaning of the item. [ Locking System Bean Hopper ] - 9.7 ounce coffee bean hopper capacity with locking system for easy removal, storage, and transfer of the bean hopper. Why Conical Burr Grinders Better? Intelligent LCD Touch Screen, Precise to 0.1S