You can also dump the carts to a micro SD card (as well as add your own ROMS if you want). I will say though, the games you dump are locked to the console. So it’s more for convenience of not having to load them again.
Anyway, I really like it and dumped all of my physical games to it.
What are your experiences with Famiclones?
I used to have this famiclone before I lost it. It wasn’t good by any means but it killed a few mins every here and there...