OwletSmart Sock 2 Baby Monitor



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What weabout it
High-tech, wearable baby monitor lets you track your little one’s heart rate and oxygen levels in real time—and alerts you if there’s a problem.

About this Product
  • Tracks heart rate and oxygen saturation levels
  • Includes three different sized cotton socks to grow with your baby
  • Bluetooth connection from Smart Sock to base with 100 foot range
  • Connects to the Owlet smartphone app to give you real-time data


Owlet’s Smart Sock 2 takes the baby monitor concept up a few notches by tracking your baby’s heart rate and oxygen levels while they sleep—and notifying you if something is wrong. The smart sensor—which measures oxygen with clinically proven pulse oximetry—fits in a cotton “sock” that wraps comfortably around your baby’s foot. Each Smart Sock comes with three sock sizes, so it can grow with your baby.

The Smart Sock communicates with a base station via Bluetooth with a 100-foot range. The base station is illuminated in green when all is well, but notifies you with lights and sounds if there’s a problem. You can also connect to the Owlet app to get notifications and stream real-time data on your phone. You can view heart rate and get notifications if BPM is higher or lower than specified zones, or see oxygen saturation levels and be notified if they drop below a preset threshold.

Drawbacks of this system: the app connection is Wifi dependent, and the sock needs to be plugged in to charge when your baby’s not sleeping. It takes about three hours to fully change, and the charge lasts for about 18 hours. Some parents will love this little machine for the peace of mind it provides, and it can be super helpful if your baby has a medical condition.

Do be aware that, though it can alert you to potential problems, it has not been tested to prevent SIDS.

For a complete baby monitoring system—vitals, video and audio—you can purchase the Owlet Cam separately or as a set.


  • Ages 0–18 mos.
  • 3.5” x 3.5” x 0.7”
  • 1.3 lbs.
  • Includes 3 fabric socks (sizes 0–18 mos.), sensor, base station, charging cords, and Owlet app
  • Does not include smartphone
  • Requires iOS 8 or higher and Android 4.4 or higher
  • Version 2
  • Wifi required for Owlet App
  • Owlet is not an FDA approved medical device and is not intended to diagnose, treat, mitigate, cure, or prevent any disease or condition
  • BPA, latex and lead free
  • ETL listed

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User Reviews (26)

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April 15, 2019

I often get misreadings.

April 15, 2019

April 8, 2019

Peace of mind.

April 4, 2019

As a new parent, I knew I'd be anxious and unable to sleep (because I'd be checking on my baby!), so this gave me the peace of mind and ability to close my eyes and sleep. We had some "false alarms" in the beginning...but they really tapered off. I think that my baby just had a really skinny foot and the sock would come loose. While it was scary to get the notification, it wasn't a yellow or red notification.

March 18, 2019

It's expensive, it doesn’t stay on the baby’s foot and it gives false positives. Unless your baby is a premie or has other health issue, don’t bother.

February 20, 2019

February 19, 2019

February 5, 2019

Moving our daughter from our room to her crib wasn’t scary at all. This sock allows us to rest assured knowing that of something is wrong we will be notified. The alarm is LOUD and will wake any adult from a deep sleep.

February 2, 2019

We had an advice nurse at Kaiser tell us that our baby was having trouble breathing the night we brought him home from the hospital (he was not), but after that scare, the Owlet gave us great peace of mind!