[KongchangAI]
Unverified80% confidenceFactTime unknown

光学PPG心率传感器在耳道/耳廓位置测量比腕表更准(血流稳定、抖动干扰小),配合骨传导/耳内血氧监测的耳机静息心率误差可控制在±3bpm,适合作为跑步实时心率训练依据

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80%
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Long-term
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