[RandomBacon]

One problem I see is, people may not want to wait 20 seconds for a dice roll.

There is also the nostalgia of a D20. Just keep in mind that this will be a novelty and not a replacement. Unless people still D&D in steam tunnels and such?

[spinity]

Great point. It actually spins at about 10 rotations per second, so you can lightly stop it after 2–3 seconds and still get a perfectly random result. That said, some tabletop players raised another concern — in group play, someone could cheat by spinning it again after seeing the result. And that’s a fair point. But the ring is primarily designed as jewelry and a fidget piece. At only 2 mm thick, comfort and aesthetics come first. As a D20 tool, it’s best suited for solo TTRPG sessions where there's no dispute, and it works wonderfully in that context. So I completely agree it’s not a replacement for a traditional D20. It’s more of a D&D-themed accessory that happens to be functional in certain situations,Thank you so much!