AUTOMATIC OPERATIONSimply invert the grinder, then it will grind salt and seasonings automatically, conveniently and effortlessly operated with only one hand. . Functions and FeaturesAutomatic gravity sensor switch, adjustable milling coarseness, transparent container, blue indicator light, large storage capacity and easy to refill and clean. . ADJUSTABLE COARSENESSAdjust the coarseness according to your preference. You just twist the knob on the top of the sea salt grinder for offering fine, medium or coarse granules to satisfy all your need. Perfect for restaurant, at the grill, by the campsite or in . Unique DesignWhen the spice mill is tilted, the LED light inside the spice mill will automatically light up. Even in the dark, you can easily grasp the amount of pepper. . BATTERY POWEREDEach grinder require 6 AAA Batteries (Batteries are not included). .