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* USB TYPE-C Charging Cable 1* User Manual