Features: Ceramic Grinding Core: The ceramic grinding core of portable coffee grinder ensures that the coffee beans are ground evenly and efficiently, providing a consistent taste every time. Adjustable Grinding Precision: Our 200ml burr coffee grinder can adjust the grinding roughness from fine to coarse according to your preferences, so you can enjoy a perfectly brewed coffee every time. Auto-stop Design: The grinding bin of the coffee bean grinder is designed with resistance sensing, which automatically stops when the grinding is completed to prevent damage to the machine and ensure safety. Easy to Clean: Our coffee grinder components are designed to be separable and can be rinsed with water except for the host, making it easy to clean and maintain, ensuring that your coffee always tastes fresh and delicious. USB Rechargeable: With a built-in 3.7V 1500mAh battery, the electric coffee grinder is equipped with a USB charging cable and simply plug it in and let it charge, and you"ll be ready to grind your coffee in no time. Specification: Product material: Ceramic grinding core + 304 stainless steel Product size: 18.8 x 7.5cm / 7.4 x 2.95in Product weight: 364g / 12.83oz Capacity: 200ml Bean bin capacity: 250g / 8.81oz Battery: 3.7V 1500mAh Input voltage: 5V Rated voltage: DC3.7V Rated Power: 13W Product color: Black, Grey, White (Optional) Packing List: 1 x Coffee Grinder 1 x Cleaning Brush 1 x USB Cable 1 x Manual