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Amazon.com: Amazfit Bip Fitness Smartwatch, All-Day Heart Rate and Activity Tracking, Sleep Monitoring, Built-In GPS, 45-Day Battery Life, Bluetooth, Onyx Black : Electronics
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Amazon.com: Amazfit Bip Fitness Smartwatch, All-Day Heart Rate and Activity Tracking, Sleep Monitoring, Built-In GPS, 45-Day Battery Life, Bluetooth, Onyx Black : Electronics
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Amazon.com: Amazfit Bip Fitness Smartwatch, All-Day Heart Rate and Activity Tracking, Sleep Monitoring, Built-In GPS, 45-Day Battery Life, Bluetooth, Onyx Black : Electronics
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PDF) The validity of two widely used commercial and research-grade activity monitors, during resting, household and activity behaviours
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