[KongchangAI]
Unverified80% confidenceDecision RuleTime unknown

如果你已拥有Apple Watch或其他支持睡眠监测的可穿戴设备,Sleep Cycle的手机传感器方案在睡眠分期精度上通常不如光学心率+加速度计的穿戴方案,购买前应评估是否真的需要额外订阅

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