






👶 Monitor smarter, parent better — because every heartbeat counts!
The eufy Security Baby Smart Sock is a cutting-edge baby monitor designed for infants 0-18 months, offering 24-hour continuous tracking of sleep patterns and heart rate via a precise Fresnel lens sensor. Lightweight and made from soft cotton, it connects seamlessly to your smartphone through a strong base station, providing real-time alerts and daily reports to keep parents informed and reassured. FSA/HSA eligible, it combines advanced technology with practical convenience for modern parents.
























| ASIN | B099RYB9RR |
| Battery Average Life | 24 Hours |
| Battery Description | Lithium-Ion |
| Brand | eufy Security |
| Brand Name | eufy Security |
| Colour | blue |
| Compatible Devices | Smartphones |
| Customer Reviews | 4.2 out of 5 stars 832 Reviews |
| Item Dimensions L x W x H | 23L x 17.5W x 9.8H Centimeters |
| Item Weight | 530 Grams |
| Manufacturer | eufy |
| Manufacturer Part Number | E8340132 |
| Material | Cotton |
| Material Type | Cotton |
| Model Number | T8340 |
| Product Dimensions | 23L x 17.5W x 9.8H Centimeters |
| Sensor Type | Pulse Sensor |
| Size | standard size |
| Team Name | eufy Security |
| UPC | 194644078805 |
D**A
Unreliable product and no liability from seller or brand
I bought the Eufy Sock and used it for five months. After that, it stopped connecting to the base and stopped showing readings. I contacted customer support and sent a video as they requested. They sent me the same troubleshooting instructions twice, which I followed, but it still didn’t work. Instead of honoring the warranty, they told me to contact the seller. The seller said they’re not responsible and told me to contact the brand. The brand then told me to contact the seller again. After being pushed back and forth with no solution, I gave up. I cannot use the product anymore, and my daughter, who is six months old, cannot use it either. This is a very expensive product, and the company refuses to take any responsibility. Their customer service is the worst I’ve ever experienced. They do not care about their customers or the safety and usability of their products. I will not buy from Eufy again, and I will not recommend any of their products.
H**Y
My cortisol levels are half what they would be without it!
We recieved a defective sock at first but Eufy was really great about sending a replacement! Now I recommend this to every new parent I know! Monitors 02 and heart rate, will alert on your phone and also the charging hub will yell out "check on your baby!" if either drops too low. Rarely slips off position and I’ve pretty much never had a false alert. Occasionally a bit glitchy with the heartrate/movement when you first open the app, but not dangerous levels and typically resolves in 30 seconds. Can cause some rubbing on the bottom of the foot so dead skin starts flaking, but nothing major or painful. It saved a friend's baby's life!! Cheaper than Owlet and worth every penny.
S**D
This product wasn’t new, it has been used before and it shows.
used product
R**E
Peace of Mind in a Tiny Sock
This eufy Security Baby Monitor Smart Sock ended up being one of those baby items that made me feel calmer and more confident as a parent, especially during those moments when you just want to peek in and make sure everything is okay. From the very first time we used it, it felt reassuring knowing I could keep an eye on my baby’s sleep, naps, and heart rate without constantly sneaking into the room and accidentally waking them up. The sock itself is soft and gentle, and it fits comfortably without feeling too tight or bothering my baby while they sleep. I really liked how easy it was to put on and take off, even when my baby was wiggly or half asleep. Once it’s on, it connects through 2.4 GHz Wi-Fi and sends updates straight to your phone, which feels almost like having an extra set of eyes watching over your baby while you rest or get things done. One of my favorite features is how it tracks sleep patterns and naps, because it helps you understand your baby’s routine better over time instead of guessing. Seeing when my baby slept longer, when they woke up, or when naps were shorter helped me adjust our schedule and feel more in tune with their needs. The heart rate tracking adds another layer of peace of mind, especially during those early months when every little thing can feel scary. Instead of constantly worrying, I could quickly check the app and feel reassured that everything was normal. The alerts are helpful without being overwhelming, and the system feels smart but still simple enough for everyday use. I also appreciated that it doesn’t feel bulky or uncomfortable for my baby, which was really important to me. Even during longer sleep stretches, the sock stayed in place and worked consistently. Over time, this monitor became part of our daily routine, not something that caused stress or extra work. It actually helped me relax more, sleep better, and enjoy my baby instead of constantly worrying. Whether it was nighttime sleep or daytime naps, I felt more connected and informed without hovering. For parents who want extra reassurance without complicated setup or heavy equipment, this smart sock feels like a gentle helper in the background. It doesn’t replace being a parent, but it definitely supports you, especially during those moments when peace of mind is everything. Overall, the eufy Smart Sock is a thoughtful, comforting tool that makes caring for your baby feel a little less overwhelming and a lot more confident.
V**A
Peace of mind
My husband and I are REALLY happy with the Eufy sock. We haven’t had any “false” alarms, and it provides a peace of mind that we really needed as first time parents. The app is really easy to use and I love that it tracks blood oxygen levels AND heart rate. It’s half the price of the Owlet, so if you’re on a budget this is the way to go too! We also have the Eufy baby camera and monitor over the crib and it’s nice to have both the sock and crib screen all in the same app. I did a lot of research before putting this on our registry and I’m really happy with it. Highly recommend!
Trustpilot
4 days ago
3 weeks ago