

👶 Stay close, even when you’re not—smart monitoring that’s always on your side.
The eufy Security Baby Smart Sock is a cutting-edge baby monitor that uses 2.4 GHz Wi-Fi to track your infant’s heart rate, sleep patterns, and naps with precision. Designed for babies 0–18 months, it offers customizable alerts and daily wellness reports without any monthly fees. Its soft, washable, and dirt-resistant design ensures comfort, while optimized sensors and algorithms provide reliable, real-time data accessible via smartphone—perfect for modern parents seeking peace of mind and smart parenting solutions.










| ASIN | B099RYB9RR |
| Batteries | 1 A batteries required. (included) |
| Batteries required | Yes |
| Battery Description | Lithium-Ion |
| Battery Life | 24 Hours |
| Battery type | Lithium-Ion |
| Best Sellers Rank | #769 in Baby ( See Top 100 in Baby ) #3 in Smart Baby Monitors |
| Brand | eufy Security |
| Color | blue |
| Compatible Devices | Smartphones |
| Customer Reviews | 4.1 4.1 out of 5 stars (1,223) |
| Item Weight | 1.17 pounds |
| Item model number | T8340 |
| Manufacturer | eufy |
| Material | Nylon |
| Material Type | Nylon |
| Product Dimensions | 9.06"L x 6.89"W x 3.86"H |
| Sensor Type | Optical |
| Size | Newborn, Small, Medium, Large |
| Style | Smart Sock Baby Monitor |
| Target gender | Unisex |
| UPC | 194644078805 |
M**N
LOVE.
Absolute life saver for my anxiety. This this has helped my sleep so much, i was so paranoid about sids, and other risks that happen to babies involving sleep. I was looking into the owlet, when my fiance found this. It’s a much cheaper alternative to the owlet, and does all the same things! It has a very accurate movement & heartrate-blood oxygen reading. It was super easy to set up, just connect to wifi & ready to go. It lets you know if the sock isn’t being worn correctly, and will alert you if there is something wrong. This sock has saved us from so much stress & worry. I really love it & recommended it to any parent with PPA, or just looking to check vitals easily and readily available.
D**M
Almost Perfect, With One Tiny Quirk
I’ve been really impressed with the Eufy baby camera. The picture quality is crystal clear—no more squinting at pixelated blobs wondering if the baby’s asleep or plotting an escape. I also love the flexibility: the camera runs unplugged, so I can easily move it wherever my baby happens to be napping or lounging. Whether it’s the crib, the playpen, or the occasional baby throne (aka the bouncer), this thing keeps up. The monitor itself is solid—good size, responsive, no lag—and the app is intuitive and user-friendly. I’m not wasting time fumbling with settings when I should be watching my kiddo. Now, the one (mildly annoying) quirk: when you go to dock the monitor on the charging cradle, it insists on turning itself back on. So if you’re trying to save battery or avoid lighting up the room, don’t bother turning it off manually—just plop it in the cradle and let it do its thing. Bottom line? Great camera, smart design, and reliable performance—just be ready for that monitor to have a mind of its own at charging time.
H**O
Updated Review (After Support Experience)
I really wanted to love this product, and after some bumps along the way, I finally do. For the first two months, the Eufy Security Baby Monitor E21 worked flawlessly: clear audio and video, reliable connectivity, and the peace of mind every new parent needs. Then, unexpectedly, the monitor began disconnecting from Wi-Fi every few hours without warning. Despite trying everything — including a Wi-Fi extender just 10 feet away and ensuring the app and firmware were fully up to date — the issue persisted. Even more concerning was the lack of alerts when the monitor went offline, leaving us unaware unless we manually checked the app. Initially, I was deeply disappointed, especially because the core features of the monitor were so promising. But here’s where Eufy really impressed me — their support team reached out, worked with me directly, and ultimately provided a replacement unit that has been working perfectly since. The connectivity issues are gone, and the experience now reflects the quality and reliability I was hoping for from the beginning. I appreciate that the company stood behind their product and took real action to make things right. If you're considering this monitor, know that not only is it a solid product, but it's also backed by responsive and helpful support — something that matters just as much.
Z**Y
Lots of issues, don't buy this.
Updating my review here, there are quite a few more issues than I originally noticed with this camera. In fact, in my original review, I said that the camera was great, but the mounting arm was quite poor and frustrating. The company (to their credit) refunded me for the ENTIRE amount of the camera. This was almost concerning, why would you give me the entire amount back for a complaint about the mounting arm? But I think the company is moving away from this specific product and I would no longer recommend it to anyone, I'm happy I got my money back, but I'm now running into technical issues that I didn't have before. The connection is shoddy, I'm well within the 20m range, with just two (always open) doors between the camera and the monitor, and it very often has difficulty connecting or needs to buffer, this isn't very helpful when the baby starts crying but I don't see or hear it for 10-20+ seconds (or, I hear it in real life before the monitor shows it). Additionally, the monitor now often recommends (almost every time) that I switch to local connection for better streaming, but then the App doesn't work anymore. I choose 'cancel' but the prompt keeps showing up. Also, I now can no longer access the camera through the app even after turning off the monitor, because of this setting.. despite a mention of 'Smart Connect' that supposedly switches between local and wifi connection for the best performance. The Monitor itself, doesn't connect to the internet, from what I can tell, it is just tethered to the camera through bluetooth, and I think this causes a lot of the connection issues. If both pieces of hardware had wifi connections, I think we could keep a better signal. Lastly, there's a QR code sticker on the camera that you use to set it up, but be warned, if this gets ruined or lost, you have to contact support for help. There's no way to 'detect' a nearby device and connect that way (as you do with literally any other IOT device but hey). Bottom line, I'm glad they paid me back for this camera, I think it's a very poorly designed product. The Camera quality itself and monitor, independently, seem quite good (image quality, etc.), but the implementation is terrible, I will likely be throwing it in the garbage and looking for an alternative. All anyone needs in a baby monitor is a reliable and seamless connection, and this product fails in that regard, and to me it therefore fails as a product.
S**E
Amazing but charging sucks.
It’s amazing for a peace of mind. It tracks his breathing, heart rate and even how long he sleeps. Only issue is the charging! Sometimes the sock just won’t charge even after being plugged in all day. Good quality and easy to set up but just annoying when it’s bed time and somehow the socks dead.
S**O
Quería amar este monitor, tuve una versión anterior y funcionaba a la perfección hasta que se cayó y dejó de funcionar, decidí comprar la versión siguiente y dejó mucho que desear, falla mucho la conexión y todo el tiempo se está yendo la imagen, sin importar si está conectado o no a internet, el alcance es bastante poco y no da mucha tranquilidad que puede estar funcionando perfecto horas y luego de la nada se va la señal y se pierde el audio y/o video Se ha ido la señal varias veces en la noche sin avisar, solo no sirve el sonido y no te avisa, me he despertado escuchando el llanto (gritos) de mi bebé a través de la puerta porque el monitor dejó de funcionar. No lo recomiendo
M**Y
Eufy are great products we have multiple cameras around our house and I’ve never had a problem with any definitely recommend the brand. However massively disappointed they sent me eu plugs in the box it shouldn’t be hard to work out if it’s perched in the UK to put the right plugs in the box.
S**D
used product
S**A
Love this camera! It’s been very useful so far, picture is very clear and sound is great too, love that you can use it with the eufy sock too! The app works really well and it’s wonderful that you can see it from anywhere on your mobile device. Few things I didn’t love was the battery doesn’t last long so I just left it plugged in, the clamp it comes with isn’t great as the camera is super heavy so I ended up buying a $40 floor stand and that solved my issue. The crying detection is glitchy too. I still feel like the product is wonderful despite these few things.
H**H
Been using this for our 7.5 month old since we brought him home. I like the peace of mind it gives us. It's not 100% accurate but it's pretty close (in terms of determining his sleep, heart rate and blood oxygen level). After daily use for 7.5 months it's still going strong. Maybe once in a blue moon it disconnects but never for more than a few minutes.
Trustpilot
2 weeks ago
2 months ago