Ultrahuman has come out with a new smart ring – the new model lasts longer on a single charge, collects more accurate data and has an important safety feature. And there is a new AI too, of course.Ultrahuman Ring Pro colorsThe Ultrahuman Ring Pro advertises up to 15 days of battery life. For comparison, the Ultrahuman Ring Air lasts 4-6 days on a charge according to official numbers. That’s a massive upgrade but isn’t the end of it either.The new ring comes with a new Pro Charger, which extends the ring’s endurance up to 45 days. The case can be charged over USB or with...