The Oura Ring 4, the latest version of the brand’s smart ring, tracks multiple health metrics, including heart rate, sleep stages, stress levels, body temperature and blood oxygen. It also automatically detects and logs exercises like walking and running, and you can manually record the start and end of any workout via the Oura app.

And for many retailers, it’s the only time out of the entire year that they have sales.

The 24-hour deals event gives you an additional chance to score major discounts on hot ticketed items whether you’re looking for headphone deals, tech gifts or need an excuse to hit “checkout” on your...