Smart rings are a step above smartwatches for their health- and sleep-tracking capabilities. I credit the Oura Ring for helping me understand the factors that impact sleep and improve my own. Smart rings track everything a smartwatch does -- sleep, activity, and wellness -- from your finger without a screen. Plus, they tend to have longer battery life than smartwatches, whose battery only last a day or two at most, so you spend less time charging and more time wearing them.While Oura continues to dominate the smart ring space, brands ranging from newer startups to established companies are throwing their hat -- or rather, their ring -- in the ring. It's never been a more exciting time to put one of these new, high-tech rings on your finger. As ZDNET's smart ring and health wearable editor, I keep my eye on all the notable smart rings entering the space, like the Luna Ring I'm currently testing. These new devices could introduce innovative features and fundamentally shake up the health tech space. The best smart rings, like smartwatches, house a comprehensive suite of health and sleep-tracking features. Some, like the Samsung Galaxy Ring, even connect to your phone for functions like photo capture and more. Also: Best headphones for sleeping in 2026Get more in-depth ZDNET tech coverage: Add us as a preferred Google source on Chrome and Chromium browsers.