Unverified50% confidenceDecision RuleTime unknown
选购需认准通过CFDA/NMPA二类医疗器械认证的产品（注册证号可查），SpO2精度误差应≤±2%（在70%-100%范围内），这是临床级血氧仪的基本门槛，无认证的运动手环级产品误差常达±3%以上
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