The grinder is clean and I have used it very little. Specifications of the Hebro G7 coffee grinder: 48 customizable grind settings. Touch control panel. Stainless steel conical burrs. Detachable base for easy cleaning and maintenance. Anti-static technology. Compatible with 51/54/58mm portafilters. Precise visual adjustment settings. Grinding timed to the nearest 0.1 second. DC motor with strong torque and low speed. Approximately 4 months of warranty remaining.