【Safety Automatic Operation】 Our grinder will not continue to grind like a normal grinder when you accidentally knock it over, our grinder is controlled by a power switch. When you turn off the switch, it will stop grinding, thus saving your battery and extending the life of the grinder.each grinder requires 4 AAA batteries,1.5V each. Tested 700mAh a battery can last about 50 minutes of power(product does not include batteries). 【Easy to clean】. Our grinder storage bin is opened by the side, so that it is convenient for the brush to reach in well to clean up, and when used for a long time, the grinding head can be removed to clean up the particles left near the grinding head to prevent the grinder from being stuck after too long use 【Adjustable Grinder】Multiple grinding levels for meeting your various choices. You can choose the coarseness of spices, salt or pepper by turning the adjusting knob on the head of the grinder. 【The newest design】grinder adopts high hardness ceramic grinding core, ceramic grinding core is hard and wear resistant, compared to the carbon steel grinding core is more corrosion resistant. Suitable for grinding pepper, sea salt and other materials, safe and secure No heavy metal, refuse to rust. 【Wide Application】The electric grinder is suitable for pepper, sea salt and other solid granular seasonings. This grinder is great for kitchens, restaurants, parties and outdoor picnics.