The durable ceramic grinder activates automatically once the grinder titled to as 45-Degree angel.
The grinder is conveniently located on the top and has a border around the rim so that your table is free of salt and pepper dust once you finished your grinding. 
No button, no effort, no mess.
6*AAA battery operated.
The powerful ceramic grinders are perfect for salt rocks and peppercorns alike. 
An easy to turn fine to coarse adjustment knob allows you to quickly change our grinding to the desired size.