Can anyone explain a seed signer device to me (preferably ELI5)?

Honestly the extent of my btc knowledge is from 10 years ago using it to purchase questionable substances on the web.

I have a hardware wallet, and buy once 100 to 200 bucks a month.

Thats about where my btc knowledge ends.

Someone gave me a seed signer device. What exactly do I do with this? How is this different from my hardware wallet?

It’s kinda hard to find any info about it online, since most of the sites I’m reading assume you know a lot about bitcoin already.

Edit: I asked chatGPT and got a bit more clarity. Seems like it’s for people who take the anonymity/security of bitcoin very seriously. Maybe I’m not the target market but I don’t see how this would be that useful to me?