How can we understand the original My AirTag?

Hi korosh208,

Welcome to the Apple Community, where some of us do our best to help each other.

Wondering if you noticed the "Related Article" link above your question on this discussion page.

Also Apple Support have other info. online:

https://www.apple.com/airtag/

Set up your AirTag using your iPhone, iPad, or iPod touch

https://support.apple.com/en-us/HT210973

Or

Buy AirTag:

Personalize your AirTag with free engraving. Only at Apple.

https://www.apple.com/shop/buy-airtag/airtag

Hope this helps :)