The WF8804 is a drum washing machine that offers a new type of user interface that combines an display with the jog dial. The new interface further enhances convenience by allowing the user to choose a certain course for washing the clothes and ascertain the remaining time. A diamond drum has been applied to protect the clothes, and the door size has been increased so that the user can conveniently place and remove laundry. It offers an air refresh function that conveniently removes smell without the use of water.