SAN FRANCISCO--(BUSINESS WIRE)--ŌURA, maker of the world’s leading smart ring, today announced Oura Ring 5, the smallest smart ring in the world. Built on more than twelve years of industry-leading innovation, Oura delivers its most advanced health sensing and insights in a more comfortable and compact form than ever before. Crafted from lightweight, non-allergenic titanium, Oura Ring 5 goes beyond tracking. Oura pairs its most innovative hardware yet with new software that moves beyond trackin