【USB Rechargeable & Unique Design】 : Our upgraded rechargeable salt and pepper grinder set avoids the hassle of battery replacement, which is different from other automatic salt and pepper grinder set. 2.【Easy to Use&Gravity Operation】:The electric salt and pepper grinder is gravity activated, Just simply turn it upside down to get fresh salt or pepper. Reduces pain in your hands,compares to manual salt and pepper grinder set。Convenient and funny. It is very suitable for gathering with family and friends, having a picnic, etc, and is convenient to carry. 3. 【Adjustable Grind Coarseness】: Just twist the knob at the top of each salt grinder/pepper grinder to set the coarseness of salt, pepper, or spices you want. Ceramic grinder at the top of pepper mill, turn clockwise to fine particles and counterclockwise to coarse particles. Simple and fashion design, suitable for all dinner tables and kitchen countertops. 4. 【Salt Grinders Refillable With NO Messes】This tall salt and pepper