Sleep tracking is nothing new in Garmin’s fitness watches, but the company’s latest wearable is a dedicated smart sleep band. The Index Sleep Monitor offers week-long battery life with continuous pulse ox tracking for monitoring your blood oxygen saturation while you sleep.
Garmin’s tracker is worn on the upper arm — which should hopefully make it more comfortable — where it tracks a variety of metrics: skin temperature; light, deep and REM sleep stages; and variations in your heart rate and breathing. The data is then combined to provide an overall personalized daily sleep score that can be viewed in the Garmin Connect app. If you already use a Garmin
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