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Example devices used for monitoring actigraphy and physiology, including the (left to right) Actigraph Spectrum, Apple Watch, Samsung watch, FitBit Versa, Fitbit Charge, Whoop band, and jewelry based trackers, (top to bottom) Oura ring and Bellabeat Leaf. All provide basic monitoring of physical activity and heart rate, with more advanced and expensive devices offering more in-depth physiological monitoring including ECG.
