S320 Smart Sock
$
169.99
FSA & HSA Eligible
1
Currently out of stock - notify me when available
Overview
Description
Easily monitor baby’s health with real-time insights into their sleep habits. The Baby Smart Sock S320 tracks naps, heart rate and oxygen saturation, and you’ll receive personalized sleep reports daily tailored to baby’s unique patterns.
Crafted from soft, breathable, and stretchable fabric, Smart Sock is also machine washable. It comfortably fits newborns to toddlers up to 18 months with three adjustable sizes.
Check on baby’s comfort from anywhere with the eufy Baby App. Whether you’re in the next room or out and about, receive real-time updates on your smartphone about baby’s vital signs. Gain instant alerts when they wake up, show signs of restlessness or if the Smart Sock gets detached.
With the App, you can tailor alerts to suit your preferences—get updates on all movements or just the essentials.
Disclaimer: eufy Baby Smart Sock is not a medical device. It is designed and intended to provide insights into your baby’s sleep patterns and help with your baby’s general sleep habits. Smart Sock is not intended to and cannot be used to diagnose, treat, cure or prevent any disease or condition, including but not limited to, sudden infant death syndrome (SIDS).
What we about it
Tracks sleep patterns, naps, heart rate and blood oxygen levels.
Details
- What’s in the box:
- Smart sock sensor
- 3 sock sizes for either foot (Small: 0-12 lbs, Medium: 12-20 lbs, Large: 20-30 lbs)
- Base station (with power adapter and cable)
- Quick start guide
- Age: 0–18 months
- Dirt-resistant, flexible, soft and washable
- HSA/FSA eligible
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Q&A
Have a question? Ask an expert.
Start typing and see existing answers.
Does this sock monitor blood oxygen as well? There are mixed reviews. Some say just heart rate.?
Best Answer: Yes, it monitors blood oxygen levels as well.
Can the sock be worn over footie pajamas or does it need skin contact to work?
Best Answer: The Smart Sock needs to be worn directly on your baby’s foot for the sensors to work properly. Clothing like footie pajamas between the sock and the skin would interfere with the fit and sensing.
How long does it hold charge?
Best Answer: The eufy Smart Sock S320 holds a charge for up to 24 hours of continuous tracking on a single charge.
Can the sock be worn under a swaddle or footed pajamas?
Best Answer: Yes, the eufy Smart Sock S320 can be worn under a swaddle or footed pajamas, as long as they are not too tight around the sock.
Does it require Wi-Fi?
Best Answer: The S320 Smart Sock itself doesn’t need to connect directly to Wi‑Fi—it communicates with your smartphone via Bluetooth. However, if you want to receive remote notifications and monitor your baby’s data when you’re away, your phone must be connected to the internet.
Customer reviews
149 Ratings
1-10 of 149 Reviews
Hopefully a good decision
I just ordered mine, I’ve heard the best things about this. Imagine being a new mom and something that will bring you peace of mind is $300 (owlet I’m talking about you!) my friend told me about this product, and I’ve asked a few more people and read reviews, sounds like it is a great option and something so will not regret!
Oct 31, 2025
Charging issues
The sock is great, although the charging is very dysfunctional. Unfortunate how expensive it is to have charging issues almost daily. The magnets aren’t strong by enough to keep it charging all day and often times the battery is running low overnight after charging all day because it disconnects from the charging port randomly. Way too finicky.
Jun 13, 2025
saved my baby
So we purchased eufy to help with sleeping at night and giving ease. If I hadn’t purchased this, my son may have not made it to a year old. From this device it detected his oxygen and heart rate lowering. Brought it up to pediatrician and turns out it all was severe! I thank Eufy so much for being price effective and being able to measure if anything is going on!
May 23, 2025
Amazing!!
We panic ordered this night 2 of our daughter being born and it helped ease so much anxiety knowing that I would be alerted if something went wrong. This is a staple in our bedtime routine and we use it every night!!!
May 16, 2025
Works great
Glad I purchased this after trying one of the other brands and having trouble connecting it. This works great easy set up, and helps me get some sleep.
Apr 17, 2025
GET THIS... Not the Owlet!
This sock is a significant improvement over the Owlet! Every issue the Owlet had has been addressed and enhanced with this design, making it a far superior option.The most significant difference is the ability to customize alerts, allowing you to adjust how they are received, at what volume, and how frequently. Another key improvement is that this product can be used in separate rooms from the base, providing greater flexibility.However, the most notable improvement is the placement of the…
Feb 28, 2025
Great!!
Feb 26, 2025
BRUE baby
I bought this after my baby stopped breathing at 9 days old and was hospitalized with BRUE episode. Since that time the monitor has alerted me to many incidents of her oxygen dropping at night. We have done many primary care visits along with er and finally pulmonology. Pulmonologist was skeptical of smart socks due to not being “fda approved” and sent an order for hospital grade o2/pulseox machine. Out of curiosity I put both on my daughter (plus smart socks tracks her sleep) numbers have…
Feb 12, 2025
Better than the owlet
Not sure why some people are saying it doesn’t ready blood ox but it does. The sock seems to be a better design with the device sitting on top of the foot, more comfortable for baby. I like that you charge the sock on the base and there is no need for extra chargers or wires.
Jan 31, 2025
Safety
My niece loves it
Jan 28, 2025
