RGB pixel strips typically come with various features and specifications. Here are some common features you might find in an RGB pixel strip containing 20 pixels:

1. Color Variety: RGB pixel strips can display millions of colors by combining different intensities of red, green, and blue LEDs.

2. Individually Addressable Pixels: Each pixel on the strip can be controlled independently, allowing for dynamic and customizable lighting effects.

3. Flexible Strip: The strip is usually flexible, allowing it to be bent or curved around objects or surfaces.

4. Adhesive Backing: Many RGB pixel strips come with adhesive backing, making them easy to install on various surfaces.

5. Voltage Requirements: Typically, RGB pixel strips operate at a specific voltage, usually 5V or 12V. It's important to ensure that the power supply matches the requirements of the strip.

6. Pixel Density: The number of pixels per meter determines the resolution and density of the lighting effects. For a strip with 20 pixels, the pixel density would be lower compared to strips with more pixels.

7. Control Interface: RGB pixel strips can be controlled using various methods, such as remote controls, mobile apps, or microcontroller boards like Arduino or Raspberry Pi.

8. Waterproofing: Some RGB pixel strips come with waterproofing, allowing them to be used outdoors or in wet environments.

9. Compatibility: Ensure compatibility with common controllers or microcontrollers if you plan to integrate the strip into a larger lighting system.

10. Power Consumption: Consider the power consumption of the strip, especially if you plan to use multiple strips or incorporate them into a larger project. Lower power consumption can be beneficial for longer usage times and reduced energy costs.

11. Effects and Animation: RGB pixel strips often come with pre-programmed effects and animations, or you can create custom effects using programming libraries or software.

12. Cutting Points: RGB pixel strips usually have designated cutting points at regular intervals, allowing you to customize the length of the strip to fit your specific needs.

13. Dimming and Brightness Control: Many RGB pixel strips support dimming and brightness control, allowing you to adjust the intensity of the lighting to suit different environments or moods.

These features may vary slightly depending on the manufacturer and specific model of the RGB pixel strip. Always refer to the product specifications and documentation for detailed information.