The electric burr grinder consistently crushes coffee beans between ceramic conical burrs, preserving the coffee's natural flavor. Unlike blade grinders, this conical burr design ensures uniform grinding for optimal taste. The hopper can hold up to 1 ounce (30 grams), enough for 4 cups of coffee in a single batch.The fully automatic system allows for convenient, hands-free operation. This cordless, USB-rechargeable mini coffee grinder is compact and portable, making it ideal for use at home, work, travel, hiking, or camping.The portable conical burr coffee grinder offers multiple grind settings, from ultra-fine to extra-coarse, suitable for various brewing methods including espresso, French press, and more. With consistent grind performance, you'll never have to worry about uneven grounds.A cleaning brush is included for easy maintenance. The removable upper burr and hopper allow for quick and effortless cleanup. Do not use water or other liquids to clean the interior of the grinder or the burrs.Specifications: Size: 19 x 7.1 cm Capacity: 25g Power: 3.7V / 1250 mAh Charging Port: Type-C Battery Life: Up to one week on a single charge Color: Black Material: Stainless steel Package Contents: 1 x Coffee Grinder 1 x USB Cable 1 x Cleaning Brush Note: Light reflection and differences in display screens may cause slight variations in color compared to the actual product. Measurement error allowed is +/- 1-3 cm.