Luna Smart Ring Gen 2 review: This Oura ring alternative has great battery life and sleep analytics

Announced at IFA 2025, the Luna Smart Ring Gen 2 is the second generation that tracks your biomarkers, and helps you ...
Live Science

How accurate are smart rings, and how do they compare to fitness watches?

Smart rings may have certain advantages over wrist-worn devices, but we recommend you do not throw out your smartwatch just yet. When you purchase through links on our site, we may earn an affiliate ...