【FINE CERAMIC BURRS】The electric coffee grinder uses conical ceramic burrs, which are in close contact with the coffee beans during the grinding process, making the grinding more uniform. The ceramic burrs generate less heat during the grinding process, which maximizes the natural aroma and flavor of the coffee. 【USB Rechargeable】The espresso grinder comes with a USB charging cable and a cordless grinder. Durable DC motor and gear, one-button switch, automatic shutdown. You can easily grind a cup of high-quality coffee anytime, anywhere. 【Compact and Portable】This electric grinder is small enough to fit in a travel bag or purse. Built-in pure copper motor with low noise, uniform and stable speed, 1 lithium battery, long life, can be used at home, work, travel, hiking, camping, you can enjoy freshly ground coffee anytime, anywhere. 【Stepwise grinding, fine and free control】This portable coffee grinder has no speed limit, which can provide the most suitable coffee thickness requirements