You can check the serial number of the device in Apple official website, and the genuine product will have warranty information.

Specific steps:

1. Open any browser.

2. Search for "Apple Serial Number Query" in the browser and click Search.

3. Then click "Apple Serial Number Query" in the search results, Apple official website.

4. Then enter the serial number and verification code of the product.

5. Then click Continue.

6. If the product is genuine, corresponding information will be displayed at this time.