Owlet Smart Sock

Tracks baby heart rate and oxygen via sock sensor. FDA-cleared.

The Owlet Smart Sock uses pulse oximetry to track heart rate and oxygen levels in real time, alerting parents via smartphone if readings fall outside preset ranges. It is cheaper than the typical rival, costing $299, and remains the go-to for anxious first-time parents seeking data-driven peace of mind despite a 2021 FDA dust-up.

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