V's black ring, wasn't just a simple accessory?

It turns out the stylish black ring worn by BTS's V was actually a smart ring believed to be the 'Oura Ring 4'! It is amazing that advanced sensors measuring sleep, blood oxygen, and even body temperature are hidden within its simple design.

Although it has neither a screen nor buttons, the perfect fusion of technology and fashion is impressive. This item really highlights V's sense of style, showing how he takes care of his health in a smart and trendy way!