Ceramic Conical BurrThis coffee grinder uses a ceramic conical burr, which has the advantage of not heat & not oxidiz the coffee powder, and can completely retain the flavor of the coffee. It is less labor-intensive than manual coffee grinders and perfectly replaces manual coffee grinders. Product DetailThe cordless & portable electric coffee grinder adopts USB-C rechargeable design ,which is very suitable for RV crowds, travel enthusiasts, business people to use outdoor. Multi Setting: The coffee grinder boasts multi grind settings to grind your coffee beans for any desired brewing method, from espresso to French press, - from ultra-fine to extra-coarse.Hands-free grinding: with auto shut-off to avoid overgrinding. Quick CleaningThe electric grinder comes with a ceramic grinding core and removable bowls that have the advantage of material safety, durability, and superior grinding performance. A specialized brush helps you thoroughly clean the residual powder that makes cleaning easier for you.