Amazon is hosting its annual Prime Day event, but for 2025, it is 4 days long (rather than 2). We're rounding up all of the best deals of the event so far and updating this article live with the cream of the crop.

For the first time ever, Oura Ring is marking down its latest iteration, the Oura Ring 4, for Prime Day. Men’s Health is pointing out this deal so you can score our favorite smart ring at a discounted price. Oura Ring is doing a 15% discount on their brand new tech across the board, which means you can score your colorway of choice.

In the US, the Oura Ring 4 has been discounted from $349 to $296.65 at Amazon US, a 15% saving. The discount is bigger in the UK, with the Oura Ring 4 down from £349 to just £280 at Amazon UK, for a 20% saving.