Feature:1. The precise grinding machine is made of high‑quality stainless steel material, which is healthy, durable, safe and environmentally friendly.2. Comfortable bottle body, our grinder adopts an arc design, which is comfortable to hold and can be easily grinded.3. Simple operation, just press a button, you can operate with one hand! Just touch the button with one hand to automatically grind.4. Powerful function, our stainless steel grinder is large enough, which can be ground several times at a time, and immediately grind and use, the taste is better.5. Built‑in 1200Ah battery, the USB charging method can be freely selected at home, office, car, mobile power for charging.Specification:Item Type: Coffee Grinder Color: Silver BlackWeight: Approx. 648g / 22.9ozBattery Type: Built-in lithium batteryModel: 18650Battery Capacity: 1200AHVoltage: 5VHow to Use1. Open the upper cover counterclockwise and put the coffee beans in.2. At the same time, it is recommended to fill the bottom with 80% coffee beans to ensure the smooth use of the coffee grinder.3. Press the button to grind the coffee beans.4. If there is no electricity, use the USB data cable to charge. When the battery is fully charged for about 3 hours, the blue charging light will be displayed.Package List:1 x Coffee Grinder 1 x USB Cable1 x Instruction ManualNote:Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.