Question about Samsung Galaxy Note 20 Ultra Snapdragon

I am a regular customer of digitec and bought this phone. I would like to know what Gebraucht + Geprüft means exactly. I have read the information on the website that says Used + Tested means products that may have minor defects in appearance, functionality or packaging. I would like more specific information about what this might mean in terms of the use of the product. What is the maximum time someone can have used the product? Are these products that were bought from digitec and then returned within the 30 days, or could someone also have used the product for a year or two?