the Electric Burr Grinder Consistently Crushes Coffee Beans Between Ceramic Pottery Conical Burrs. This Process Also Retaining the Coffees Natural Flavor & Aroma Better Than a Blade Grinder. the Portable Conical Burr Coffee Grinder Boasts Multi Grind Settings to Grind Your Coffee Beans for Any Desired Brewing Method, From Espresso to French Press, From Ultra-fine to Extra-coarse. the Hopper Can Grind Up to 1 Ounce & 30 Grams (enough for 4 Cups) of Coffee Beans in a Single Batch. the Fully Automatic System Allows for Convenient, Hands-free Grinding. Put This Cordless & USB Rechargeable Mini Coffee Grinder in Your Bag or Suitcase, You Can Enjoy Freshly Ground Coffee Anytime, Anywhere, Whether at Home, Work, Travel, Hiking or Camping.