NFC Chip Ring Reliable Metal NFC Ring All-Round Fashionable Useful Portable Black US 13

3 of 4 did not work (got ring sizes 10-13). The interesting part is that the one that did had a distinct difference. It had a notable rounded side to it where as the other had flat sides.

I ordered a bunch of these, and they are very difficult to read and write. The rings themselves are very cheap and would probably turn my finger green if I wore them too long. I disassembled one to check out the chip and circuitry inside. To fit it in a ring, I think a compromise had to be made on the antenna. I think it would work better if the antenna was better designed.

The chip isn't strong enough and stopped work after 20 or so scans

Not a NFC ring, just a regular ring

Absolutely fake.