CERAMIC GRINDING CORE: The ceramic grinding core of the portable coffee grinder ensures that the coffee beans are ground evenly and efficiently, delivering consistent flavor every time. AUTOMATIC STOP DESIGN: The grinding bin of the coffee bean grinder is designed with resistance sensing, it stop automatically when the grinding is finished, preventing damage to the machine and ensuring safety. EASY TO CLEAN: Our coffee grinder components adopt detachable design, except the main unit can be washed with water, easy to clean and maintain, your coffee is always fresh and delicious. USB CHARGING: The electric coffee grinder has a built-in 3.7V 1500mAh battery and comes with a USB charging cable, just plug it in and let it charge, you can grind coffee immediately. Product Size:18.8 x 7.5 cm/7.4 x 2.95 inches Product Weight:360 grams/12.83 ounces Capacity:200ml Battery:3.7V 1500mAh Input voltage:5V Rated voltage:DC3.7V Rated power:13W Colour:Black Material:ABS Package Contents: 1 * grinder 1 * cleaning brush 1 * data cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.