Coffee Bean Grinder Small Household Electric 6 Gears Balanced Thickness Ceramic Grinding Core Outdoor Portable Grinder Cup USB Self Stop After Grinding Features: 1. This mini portable coffee grinder increases the capacity of the grinding bin and can grind 25g coffee beans at a time. 2. This grinding machine adopts high-precision spiral ceramic grinding core, grinding is not easy to heat, retains the taste of coffee beans, and is not rusted and not easy to wear. 3. This grinding machine adopts USB charging, no need to plug in, can also be used outdoors, can be used with a charging bank, notebook, etc. 4. This grinding machine adopts low noise pure copper motor, the revolution is uniform and stable, and the built-in 1250mah lithium battery has strong endurance. 5. This grinding machine is equipped with intelligent resistance sensing, automatic power off after grinding, safe and convenient. 6. This grinding machine adopts layered structure, except the main machine, other parts can be washed directly, very convenient. Specifications: Material: Ceramic + PP Color: White / Black （Optional） Gear: 6 Power Supply: USB Charging Rated Power: 13W  Built-in Battery: 3.7V 1250mAh Lithium Battery Package Size: 19 * 8 * 8cm / 7.5 * 3.1 * 3.1in Package Weight: 490g / 1lb Note:Please read the product manual carefully before use. Package list: 1 * Grinder 1 * USB Cable  1 * Brush