Features:  【QUICK GRINDING】This electric coffee grinder can be used to quickly grind coffee beans, allowing you to enjoy a cup of fragrant coffee in your free time or busy work.  【THICKNESS FREE CONTROL】The powder is even and fine, and the thickness can be adjusted steplessly. The finest ground coffee powder can reach 30 meshes (>90%).  【CERAMIC GRINDING CORE】The cone-shaped ceramic grinding core is not easy to generate heat, which reduces the loss of flavor and the off-flavors produced by extraction.  【AUTO STOP】One key to open and close, automatically stop grinding when no beans, simple and convenient operation, allowing you to easily grind coffee beans.  【PORTABLE SIZE】The coffee grinder has a compact size. It is USB charging, can be used for 1 week after charging. Very convenient for you to carry when you go traveling and enjoy aromatic coffee anytime, anywhere. Specifications: Name: Electric Coffee Grinder Material: Plastic ABS, copper motor, PC Color: black Size: 18*7.5*7.5CM Weight: 0.4KG Rated voltage: 3.7V Wattage: 13W Battery specifications: 3.7V, 1250mAh Maximum charging current: 1A Powder tank capacity: 120ML Use environment temperature: -10~40℃ Relative humidity: 10%~95% Charging time: 3-4 hours Grinding weight: 25g for coffee beans Grinding times: 20 grams of coffee beans are ground into medium particles (100 mesh): 15-18 times Packing List: 1* Electric Coffee Grinder 1* Brush 1* USB TYPE-C Charging Cable 1* English User Manual