[ONE HAND & NO BUTTONS TO PRESS]You only need to tilt the pepper grinder to automatically activate and return it to vertical to stop.The size is just one-handed, even a woman with a small effort can use it easily. [ADJUSTABLE GRIND COARSENESS]The grinder knob is built into the top of the pepper mill,you can according to your perference and the dishes you want to adjust the grind coarseness by turning it to the right or left. 1. The powder is more delicate 2. Unlimited gears to adjust the thickness, the thickness can be freely 3. One-key start, transparent visual chamber, LED ambient light Battery: 4 x AA batteries (not included) Material:ABS colour:Black Package Contents: 2 * Household Electric Pepper Mills Only the above package content, other products are not included. Note: Light 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.