Ultrahuman’s Ring Pro promises 15-day battery life and a $479 price tag as the wearables maker expands its health-tech push. Ultrahuman on Friday unveiled a new smart ring with longer battery life and a redesigned form factor, as the Bengaluru-based wearable maker seeks to revive its U.S. business that was disrupted last year by a patent dispute with rival Oura. The Ring P... [4630 chars]
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