If there’s one thing that stops people using their smart rings over the long term, it’s the battery life. After all, they’re so unobtrusive, it’s easy to forget to drop it on the charging plate every few days. It doesn’t take long for your pricey gadget to become little more than a very expensive piece of jewelry. It’s one of many maladies Ultrahuman is looking to address with the advent of its new Pro, a smart ring boasting up to 15 days of battery life. It even ships with a fancy battery case, which itself includes enough power to last it 45 days, making it easier to keep re-charged on the go.
三、核心支撑：两大基金会，不止是给钱那么简单Sun City的医疗体系能稳定运转、持续升级，背后离不开两大基金会的支撑——J.G. Boswell基金会（1947年成立）和Sun Health基金会（1968年成立）。它们的作用，远不止“给钱”那么简单，而是渗透到医疗体系的资金、运营、创新等每一个环节。
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