https://ouraring.com/product/heritage-silver https://ouraring.com/product/heritage-silver This is a health monitor ring. It is a service, though: You pay $400

https://ouraring.com/product/heritage-silver https://ouraring.com/product/heritage-silver This is a health monitor ring. It is a service, though: You pay $400 for the hardware, then $6 for the privilege of accessing the data it collects, locally, to your device. I was going to buy it until I saw they were looking for such a predatory revenue stream.