General description The Electric Coffee Grinder is a USB rechargeable device designed for coffee enthusiasts who appreciate the rich and original taste of coffee. Featuring a high-precision ceramic grinding core, it minimizes heat during grinding, preserving the coffee's flavor. Technical specifications Type: Electric Coffee Grinder Grinding Core: High-Precision Ceramic Rechargeable: Yes, USB Usage Adjustable coarseness for precise control of coffee powder thickness. Turn clockwise for finer grind and counterclockwise for coarser grind. One-button operation for easy use; automatically powers off after grinding. Other information Easy to disassemble and clean; residual coffee powder can be easily removed. Note: Do not wash the main unit in water; clean with a damp towel.