The Ultrahuman Ring Air is a well-rounded sleep and activity tracker, offering features that go head-to-head with the Oura Ring. It's seeing a 15% discount during Amazon's Prime Day.



Source: ADnet
Source Link: https://www.zdnet.com/article/i-tested-a-subscription-free-smart-ring-that-rivals-oura-and-its-50-off-for-prime-day/