1. with sharp stainless steel blade and inner surface, the grinding is fast and uniform and durable. 2. it only takes 18 seconds to grind coffee. 3. easy to grind and use 4. the transparent visual cover allows you to monitor the grinding process so as to adjust the grinding. 5. built in adjustable grinding settings can accurately control the roughness of coffee beans. 6. multi scene and multi-function. it's perfect for grinding coffee beans, nuts, seeds, herbs and spices to save your energy and time. 7. easy to clean.