Ultrahuman bets on redesigned smart ring to win back U.S. market after Oura dispute oura Startups Technology ultrahuman Ultrahuman Jade Ultrahuman Ring Pro Ultrahuman bets on redesigned smart ring to win back U.S. market after Oura dispute Jagmeet Singh February 27, 2026 Ultrahuman’s Ring Pro promises 15-day battery life and a $479 price tag as the wearables maker expands... Read More Read more about Ultrahuman bets on redesigned smart ring to win back U.S. market after Oura dispute