The grinder features a BPA-free transparent acrylic container, allowing you to easily see the remaining spices and quickly identify which spicy is inside. The built-in LED light provides a soft, yet bright illumination, ensuring you can accurately gauge the amount of salt, pepper of other spices you're adding to your dish, even in low-light settings. Features: 100% Food-grade Material Clear Design for Easy Monitoring Blue LED Illumination Adjustable Coarseness How to use: Remove the top cover and insert 6 AAA batteries. Unscrew the bottom container, fill it with spices, and securely reattach it. Adjust the grinding knob to set your desired coarseness. Flip the grinder upside down to activate its automatic gravity function. Specification: Material: ABS + Polystyrene + Stainless Steel Dimension: 20 x 6 x 6cm Power: 6 AAA batteries (not included) Applicable Objects: pepper, sea salt, cumin, other spices. Care Instruction: Hand wash recommended(container). Dry well before storage.