NOTE: Blue smooth flashing: working Red light flashing: insufficient strength Red light: charging Blue light: totally charged Specifications: Material: Plastic ABS, copper motor, PC Color: black Size: 18*7 diameter Weight: 0 Packing size: 20*9*9CM Rated voltage/power: 3/13W Battery specifications: 3, 1250mAh Maximum charging current: 1A Grinding weight: 25g coffee beans Powder warehouse capacity: 120ML Use surroundings temperature: -10~40℃ Relative humidity: 10%~95% Charging time: 200-240 mins Packing List: 1* Coffee Grinder (Host) 1* Cleaning Brush 1* USB TYPE-C Charging Cable 1* English User Manual 1* Packing Box