There are a few varieties and a few firmwares. I have one good one and one iffy one. (The one by Cam Mall is kinda shitty; the other one is out of stock.) I try to use the good one whenever possible, but sometimes you need two.
And I mean, having these on your amazon purchases isn't in and of itself gonna get you on a list. There's legitimate uses for them. Just … don't be dumb and don't get caught. Be smart. Do your homework and preparation.
These used to be even more awesome and connect to the internet. You used to be able to check them from anywhere. After the dumbass tariffs, those servers were shut down.
They're still small and flexible tho. Still a good, affordable option.