Our electric pepper grinder adopts a gravity sensing design and is composed of a stainless steel ring, removable clear acrylic bin and durable ceramic grinding cores, it can automatically grind with just a gentle flip. Its slanted lip makes it easy to sprinkle spices without spilling them, resulting in fresh ground spices. When the salt grinder is working, the blue LED light will automatically light up, making it easier to see the amount of seasoning in the food. You can choose the coarseness of your pepper, salt or and other solid grain seasonings by turning adjustment knob at the head of the grinder. Before use, fill up 6 AAA batteries (not included) according to the instructions.