[USB Rechargeable]---Our gravity automatic pepper mill with built-in Type C rechargeable battery with charging Base and uses advanced charging technology. Cheaper to maintain than other battery operated salt mills on the market now. Only a USB charging cable is required, no need to waste a lot of money to buy batteries any more      [Adjustable Coarseness]---USB rechargeable salt pepper grinders can be easily adjusted the coarseness from fine to coarse by rotating the adjustable knob on the top of the salt and pepper shakers. Rotate clockwise into fine particles and rotate counterclockwise to grind into coarse particles. With the adjustable coarseness system, you can choose the suitable coarseness yourself      [One Hand Operation]---With a switch button controls the entire electric salt grinder and the indicator light turn on means the grinder is in standby mode. Just press the button and tilt the electric salt shaker to start automatic grinding. After use, press the switch to turn off the grinder(Indicator turns off). Humanized design help to prevent consuming all power when you accidentally run over the pepper mill      [Widely Used]---You can use it to grind sea salt, pepper, black pepper, red, white or garlic pepper or other spice. Not only suitable for kitchen, but also very suitable for outdoor picnics and BBQ. Great gift for family member, friends too. Please note: Salt and pepper not included in package      [High-Quality Material]---The adjustable salt mill is made of high quality material, no risk of glass breakages and extremely durable for use. Top quality ceramic rotor offers long time durability and can grind against the toughest peppercorns, sea salt or other spices. The transparent bottle made of thickened and make it easier to observe the seasoning.            Material: plastic      colour: black            Package Contents:      2 x grinder      1 xCharging base      1 x Charging cable      1 x Cleaning brush            Only the above package content, other products are not included.      Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.