[KongchangAI]
Unverified85% confidenceFactTime unknown

心率款运动耳机主流采用耳道PPG光学传感器,耳道血流稳定、动作干扰少,静态测量误差可控制在±3-5bpm,比手腕光电心率在高强度运动时更准确;但HIIT等剧烈冲击场景仍不如胸带(心电式)

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