Automatic operation Simply turn the grinder upside down to grind salt and seasonings automatically, making it easy to operate with just one hand. . Functions and features Gravity-sensitive automatic switch, adjustable grinding thickness, transparent container, blue indicator light, large storage capacity, easy to refill and clean. . Adjustable Thickness Adjust the thickness to your liking. You simply turn the knob on the top of your sea salt grinder to provide fine, medium, or coarse grains to suit all your needs. Perfect for restaurants, grills, campsites or indoors. Unique design The LED light inside the spice grinder will automatically light up when the spice grinder is tilted. Even in the dark, it's easy to know how much chili to use. . Battery Powered Each grinder requires 6 AAA batteries (batteries not included). .