4. Adjustable Coarseness - The upgraded ceramic grinding core can grind spices and salt more evenly and finely, no risk of metal , turn the knob on the bottom of the grinder to set the coarseness you want, perfect for most Spices such as sea salt, black salt pepper, white pepper and other spices. 3. The dual charging base can charge two grinders at the same time, no need to connect the grinder to a USB cable, for charging and organized, keep your kitchen tidy. 2. One-handed operation - one button to , easy to operate, when the grinder starts working, the blue LED light up and illuminate the food to prevent food from over-seasoning, no need to flip the grinder can protect your wrist, suitable for those People with arthritis or limited grip strength. 1. Two grinders (built-in rechargeable battery), dual charging base, manual, USB data cable, cleaning brush. 5. Other - The pepper grinder is made of food-grade material, which feels good and 't get cold in winter. The large storage capacity can hold 70ml peppercorns. The clear window makes it easy to distinguish different spices. 6. - The elegant design and exquisite gift box of this grinder set a for any occasion. Appropriate gift for Christmas, Anniversary, Father's Day, Mother's Day, Birthday, Housewarming and other holidays.