Automatic Operation - This Electric Pepper and Salt Grinder with a Gravity sensor switch, you even needn't to press a button, - Simply flip the grinder and you will have fresh ground spices, Convenient and fun. Battery powered, each grinder requires 4 AAA batteries, batteries not included. Adjustable Grinder - Many grinding levels for your choice, allow you to grind your spices from coarse to fine. - Electric Pepper and Salt Grinders use a ceramic rotor. You can choose the coarseness of your spice salt, or pepper by turning the adjustment knob at the head of the grinder. Wide Applicability The electric grinder is suitable for pepper, salt and other solid grain seasonings. Battery-powered, convenient, and fast, you can use it anytime and anywhere. This grinder is a good helper for kitchens, restaurants, parties, and outdoor picnics. Unique Design - The transparent acrylic material at the bottom allows you to see the remaining spices and is convenient to distinguish the spices in the grinder. Turn the bottom container clockwise to open it. - Turn the bottom container counterclockwise to close it. When closing, do not over-tighten it, otherwise it will require a lot of force to open it again. With the blue LED light, blue light is not only bright but also gentle, you can easily see the amount of pepper, salt, and other grains you put in your food. What's in the box 2 x Gravity Electric LED Salt and Pepper Grinder