This convenient cordless electric coffee grinder is equipped with a conical ceramic grinding core, which is not easily heated and retains the original flavor and aroma of the beans. The core is removable for cleaning. 5-level grinding settings from ultra-fine to extra coarse. Easy to adjust the grind size to suit your brewing method. Supports grinding up to 25g of coffee beans each time (enough for 4 cups). Grinding stops automatically after 3 minutes or when there are no more coffee beans left. Built-in rechargeable battery and USB charging (adapter excl.). Charging time approx. 3 hours for use up to 30 times. LED indicator to show working status and low battery warning. One-button control. Easy to use. Comes with cleaning brush to remove remaining coffee powder. Product size: 18 x 7.5 x 7.5 cm. Weight: 400g. Easy to carry. Suitable for camping, travel and business trips, and can be put in backpacks, handbags and suitcases.