The Oura Ring 4 is our choice as the best smart ring, and its Brushed Silver variant is on sale for the first time during Amazon's Prime Day at 15% off.

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.

Considering the Oura Ring 4 usually retails for $400 to $500 (depending on the color), this deal is worth snatching up. And with Prime Day deals already heating up on walking shoes, weighted vests, and under-desk treadmills, this luxe little ring is the cherry on top.