product description: Function: Grinding and powdering: coffee beans, whole grains, spices, medicinal materials, etc. Voltage: 110V / 220V [Can be customized as required, welcome to consult] Power: 150W Capacity: 100ml The parameter specifications depend on the configuration. If you need to know more details, please contact customer service! Product Features: 1.304 stainless steel inner tank and blade, easy to clean, durable and not easy to be damaged; 2. This grinder is mini and compact, making it easy to carry around; 3. Transparent visible lid makes it easy to observe the grinding status; 4. The grinder can be started with one click and is simple and easy to operate; 5. The length of grinding time can control the thickness of grinding and adapt to different hand grinding methods; 6. Can be ground: coffee powder, mung bean powder, red bean powder, walnut powder, medicinal powder, etc. (Note: Some medicinal materials with relatively hard materials need to be cut into small pieces before grinding). Grinding instructions: This grinder is only suitable for grinding dry ingredients; Cleaning instructions: After use of the grinder, in order to prevent water seepage in the motor, do not wash it directly with water. You should wipe the inside with a damp cloth or a small brush. Do not wash it with water! ! ; Operation Tips: Every 30-40 seconds the grinder works, it should be properly rested for 30 seconds before starting to prevent the motor from overheating.