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:max_bytes(150000):strip_icc()/man-sleeping-with-smart-watch-in-his-hand-845885898-e405d11717314266985ec7d0e8779771.jpg "How Actigraphy and Activity Monitors Track Sleep")
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IOWODO Smart Watch Fitness Tracker 1.69'' HD Touch Screen with Heart Rate Monitor & Sleep Tracking, SpO2 & Temperature Detecting IP68 Waterproof Smartwatch for Men Women Compatible with iPhone Android : Everything
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