The Owlet Smart Sock comfortably wraps around your baby’s foot to track heart rate, oxygen levels and sleep using clinically-proven pulse oximetry. It sends data via WiFi/Bluetooth to Base Station which then glows green when everything is okay but will notify with sounds and lights when something’s wrong. And with the use of the Owlet app, parents can see real-time heart rate and oxygen levels and receive notifications on their smart phones.
Source: Owlet
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