Pebble founder Eric Migicovsky's next big product is a memory-recording ring that works with phones and Pebble watches. But here's the catch: It doesn't recharge, and you can't replace the battery, ...

Apple has been planning on making an Apple Ring for two decades — and it's taking its time to ensure this isn't just clever technology, but instead is a ring so useful that it will be a smash hit.

Since I had a heart attack four years ago at the age of 33, the Oura Ring has been a trusty sidekick for managing my health. First, it was the Oura Ring 2, and a few months later, the Oura Ring 3 ...