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Heart rate monitor inaccurate for first half of workout. Mi Band 4. This was a high intensity boot camp workout. Only been a problem for last couple of weeks, got band beginning
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Xiaomi Mi Smart Band 6 40% Larger 1.56'' AMOLED Touch Screen, Sleep Breathing Tracking, 5ATM Water Resistant, 14 Days Battery Life, 30 Sports Mode, Fitness, Steps, Sleep, Heart Rate Monitor
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