Unverified90% confidenceDecision RuleTime unknown
户外涉水/水上运动选IP67可满足短时浸泡（1米/30分钟），皮划艇/垂钓/漂流等高频落水场景需IP68（长时间浸泡且防持续冲刷）
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90%
Confidence
Long-term
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