Owlet announced last year that it was working on Owlet Dream Sock, a new brand from its line of wearable smart socks that detect your baby’s oxygen levels and heart rate. This new brand of smart wifi baby monitor uses PPG technology unlike the older models (Smart Sock 2 and 3) that used pulse oximetry technology. You can get the Dream Sock independently for $299 or can buy it as a bundle for $399 as Owlet Dream Duo Bundle which come with a Sock and Camera.

The Owlet Dream Sock is similar to the Owlet Smart Sock 2 and 3 in that it monitors your baby’s vitals while they sleep and sends alerts to your phone if something appears wrong. However, there are a few key differences between these brands that are worth noting. I’ll explain later but first, let me review Owlet Dream Sock

Owlet Dream Sock Review

Unlike the other Smart Socks by Owlet, Owlet is marketing Owlet Dream Sock as a sleep aid device and not a monitor for breathing and heartbeat. It provides a comprehensive understanding of your baby’s sleep habits giving you personalized tips and guides to help your baby sleep through the night.

They still utilize their smart sock which is wrapped around your baby’s foot in order to provide readings of your baby’s sleep quality indicators. Take note that they don’t say ‘to track your baby’s breathing or heart rate’. If you are looking for baby breathing monitors, we have our top picks here.

Owlet has gone on to describe the Deam Sock as;

“Owlet’s advanced algorithm can detect when your baby’s Sleep Quality Indicators change from baby’s baseline- an indicator that Baby may need your assistance or adjustments to get high-quality sleep.”


To make it practical and for you to actually take actions that would improve the quality of your bab’s sleep, this Dream Sock connects with the App. The Dream App provided practical guides and support to enable you to improve your baby’s sleep quality. It also includes a personalized Sleep Report which is a deep analysis of your baby’s sleep patterns and what you can do to help.

The Owlet Dream Sock is not just some fad or another one of those ‘health gadgets’. This was created by actual experts, PhDs, and medical doctors specializing in pediatric sleep.

Owlet Dream Sock Technology:

Unlike Owlet Smart Sock 2 and 3 which used pulse oximetry technology, Owlet Dream Sock uses PPG technology. PPG stands for Photoplethysmography and is a photometry method of measuring blood volume changes in the microvascular bed of tissues. This technology is commonly used to measure heart rate.

While PPG technology can still obtain heart rate and breathing rate, Owlet describes these vital signs as mere indicators of a baby’s sleep quality.

Other sleep quality indicators that you can track with the Dream Sock are;

  • Heart rate(beats per minute): The average range for a baby’s heart rate is between 120-160 bpm.
  • Oxygen Concentration: Normal oxygen concentrations are between 95%-100%.
  • Respiratory Rate: The average range for a baby’s respiratory rate is 20-40 breaths per minute.
  • Walking: In babies, normal walking and standing upright is a sign of good sleep quality.
  • Wakings: Normal waking is a sign of your baby having good sleep quality.
  • Noise: The more noise your baby makes while they are sleeping, the better.
  • Temperature and humidity: Normal temperature is between 66-70 degrees Fahrenheit and humidity 45%-75%.

It does not track other factors such as instances of the baby rolling over or when your baby covers his/her face.

To determine sleep quality, they use the following factors;

  • Sleep disorders
  • Snoring
  • Developmental state
  • Sleep environment
  • Sleep hygiene and habits

Sleep prompts

Owlet Dream Sock has an additional feature that is missing in Owlet Smart Sock 2 and 3, sleep prompts. There are three prompts that you need to be keen to understand their meaning. They are;

  1. Lavender prompt: When you see a lavender color on the base station, it is an indication that your baby needs support in order to get better sleep. You may get this prompt when the baby is crying loudly or moving when the infant is uncomfortable, or if the room is too hot, cold, damp, or dry.
  2. Blue Prompt: When you see a blue color on the base station, it indicates that the connection between Dream Sock and the base station was interrupted. Possible reasons could include the base station being out of range, out of battery, or the signal is being blocked.
  3. Yellow Prompt: If you see a yellow prompt on the base station of the Owlet Dream Sock, it indicates that the sensor is not picking up any data. This could be due to the baby’s foot being too small or the band of the sock being too tight.

Digital Sleep Coach:

Through the App, Owlet Dream Sock gives you weekly newborn sleep tips from week 0 to when they attain the age of 18 months.

The tips are evidence-based and are meant to give you the knowledge you need to improve your baby’s sleep quality. For example, one of the tips is on how to swaddle your baby for better sleep.

FSA/HSA Approved:

Owlet Dream Sock is FSA/HSA approved, meaning that you can use your flex spending account or health savings account to pay for it.

Owlet Dream Sock vs Owlet Smart Sock 3 vs 2

  • Features: Owlet Smart Sock 2 and 3 notifies you when your baby experience changes in heart rate and oxygen levels outside the preset values. Dream Sock is missing these features and is not intended to keep you notified when oxygen level or heart rate changes.
  • Sleep quality indicators: Dream Sock has sleep quality indicators and sleep prompts that are missing in the Owlet Smart Sock 2 and 2.
  • Technology: Owlet Dream Sock uses Photoplethysmography(PPG) technology while Owlet Smart Sock 2 and 3 use Pulse oximetry. PPG is a non-invasive optical technique that measures changes in blood volume in the microvasculature. PPG can be used to measure heart rate, respiratory rate, and blood oxygen saturation.
  • Age: Owlet Dream Sock comes with both newborn, infant and toddler socks that can be used from when a baby is born to age 5. On the other hand, Owlet Smart Sock 3 can only be used until the baby attains 18 months age.


  • The Owlet Dream Sock is a great device for tracking your baby’s sleep quality and providing you with sleep tips through the App.
  • Considered very accurate
  • Can be used up to 5 years of age
  • Non-invasive technology to track vital signs
  • HSA/FSA Approved


  • Does not track oxygen level or heart rate and therefore may not be as accurate as other products on the market
  • Only available for purchase online at a price of $199 per unit.
  • The App has limited features that cannot be customized according to your preferences.
  • No roll-over alerts or face-covering alerts like in the Cubo Ai Plus Baby monitor
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