Garmin Vivosmart 4 tracks your sleep and energy levels

Garmin Vivosmart 4 tracks your sleep and energy levels
Garmin has launched the latest version of Vivosmart, and based on its features, the wearable is meant to be a direct competitor to Fitbit's Charge 3. Like Fitbit's new tracking device, Vivosmart 4 comes with a blood oxygen monitor called "pulse ox,"…
Source: Engadget

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