Here are some common features of automatic salt and pepper shakers:

1. One-Hand Operation: Many models allow users to season their food with one hand, making them especially useful while cooking or dining.

2. Adjustable Grind Settings: Some automatic shakers feature adjustable grind settings, allowing users to choose between coarse or fine granules of salt and pepper.

3. Transparent Storage Compartment: Many designs include a clear compartment that displays the contents, making it easy to see when it needs refilling.

4. LED Indicators: Some models have built-in LED lights that illuminate the food while seasoning, providing better visibility.

5. Ergonomic Design: They are often designed for comfort, with grips that are easy to hold and operate.

6. Automatic Activation: These shakers can activate through a push button, tilt mechanism, or even motion sensors, adding to their convenience.

7. Durable Materials: They are usually made from stainless steel, plastic, or other durable materials, ensuring longevity and easy cleaning.

8. Refillable: Most automatic shakers are designed to be easily refillable, allowing users to switch out different spices as needed.