While the deal on Oura Ring 4 has concluded, customers can still save big on the previous generation of Oura's celebrity-loved smart ring. Plus, discounts on more top health trackers from brands like Google and Samsung.

Smartwatches aren’t for everyone. Maybe you don’t want to wear a screen-equipped gadget to bed, or you’re just after something that’s less obtrusive. Subtlety is where smart rings like the Oura Ring 4 shine, and Prime Day has knocked down its cost. It costs $296.65 ($52.35) from Amazon, which is both its best price and first significant discount.