In Depth Baby Product Reviews Led by a Pediatrician

GoodBaby SM663 Review

A basic and affordable unit, but it doesn't do anything particularly well
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GoodBaby SM663 Review
Credit: Matt Lighthart
Price:  $47 List
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Manufacturer:   GoodBaby
Wendy Schmitz
By Wendy Schmitz ⋅ Senior Review Editor  ⋅  October 24, 2026
Contributions From: Juliet Spurrier, MD
57
OVERALL
SCORE


RANKED
#10 of 13
  • Video Quality - 30% 3.5
  • Sound Quality - 25% 6.1
  • Range - 20% 7.0
  • Ease Of Use - 20% 6.2
  • Battery Life - 5% 9.0
List Price: $47

Our Verdict

The GoodBaby SM663 isn't good. The video quality is blurry and dated, lacking details some parents want, and the features are basic. We had difficulty getting it to work in some places that required passing through more than 4 walls, making it less than ideal for larger or multi-level homes. Overall, it didn't wow us in any way beyond being cheap. And therin lies its most redeeming quality: it's cheap. This monitor is well under $100, and it gets the job done with average sound, sound activation, and “good enough” video. It is straightforward, simple enough for grandma, and can alert you to a crying baby, which could be the sweet spot for many. However, if you want to see any kind of detail, like your baby's eyes or hear the nuance of their cry, it is likely to leave you frustrated and wanting more. So while it is hard to recommend based on video quality alone, we can see the appeal for some, and it could be just the ticket for cheap monitoring that is a step above a sound-only monitor.
REASONS TO BUY
Cheap
Very long battery life
Straightforward
REASONS TO AVOID
Poor video quality
Harsh audio at high volumes

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GoodBaby SM663
Awards  Editors' Choice Award
Best Video Monitor for Most Families
Best Value Award
Best Video Monitor on a Budget
  
Price $47 List
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Star Rating
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Bottom Line A basic and affordable unit, but it doesn't do anything particularly wellA well-designed hybrid monitor with great video, sound activation, and a camera battery backup, but it costs morePractical, easy to use non-WiFi options that meet all the basic needs for monitoring a baby without the frills and higher priceWhile cheap, it doesn't work well as a baby monitor as the crying detection failed, and it won't stay continuously on when using other smart device appsNot the best video or sound quality, making it less appealing despite the low price
Rating Categories  GoodBaby SM663 Eufy E21 Momcozy 1080p HD TP-Link Tapo C200 VTech VM819
Video Quality (30%)
3.5
8.5
6.0
5.9
2.5
Sound Quality (25%)
6.1
8.3
7.9
3.8
5.2
Range (20%)
7.0
9.0
4.0
9.0
8.0
Ease Of Use (20%)
6.2
7.9
8.9
3.2
4.5
Battery Life (5%)
9.0
7.0
8.0
7.0
10.0
Specifications GoodBaby SM663 Eufy E21 Momcozy 1080p HD TP-Link Tapo C200 VTech VM819
Measured Range 186, 4 walls Anywhere You Have Connectivity 110, 3 walls Anywhere You Have Connectivity 174, 7 walls
Sound Activation Yes Yes Yes No Yes
Camera Resolution 480p 4K UHD 1080p HD 1080p 480p
Movement Detection  No No No No No
Max Volume 80 dBa 89 dBa 78 75 dBa 69 dBa
Measured Battery Duration 12 hrs and 27 minutes 8 hours and 52 minutes 11 hrs and 35 Device Dependant 19 hours and 33 min
Motion Detection  No Yes No Yes No
Pan/Tilt Pan: 355°
Tilt: 120°
Pan: 330°
Tilt: 60°
Pan: 360°
Tilt: 360°
Pan: 360°
Tilt: 114°
Manual
Zoom Distance  2x 8x 4x 9x 2x
Max # of Cameras 4 2 4 Unlimited 4
Max Number Of Viewers 1 5 1 5 1
Screen Size 4.5 4.5 4.5 App Based 2.5
Communication Technology Non-WiFi: FHSS 2.4GHz Hybrid: WiFi 2.4GHz + FHSS 2.4GHz Non-WiFi: FHSS 2.4GHz WiFi: 2.4GHz Non-WiFi: FHSS 2.4GHz
Manufacturer's Claimed Range (buyer beware!) 1000 800 900 Not specified 1000
Temperature Yes Yes Yes No Yes
Humidity Sensor No No No No No
Talk-to-Baby Yes Yes Yes Yes Yes
EMF  1.66 V/m 0.85 V/m 2.78 V/m 1.67 V/m 3.75 V/m

Our Analysis and Test Results

goodbaby sm663 - for basic viewing, the goodbaby could be enough, depending on your...
For basic viewing, the GoodBaby could be enough, depending on your goals.   Credit: Matt Lighthart

Audio / Visual


While the audio is about average for the GoodBaby, the video is so bad it borders on offensive, earning one of the lowest scores in the group.

goodbaby sm663 - we tested the decibel levels of the goodbaby's highest volume and...
We tested the decibel levels of the Goodbaby's highest volume and when the sound was the best quality.   Credit: Matt Lighthart

The audio is really the shining star of the Goodbaby, and even then, it is only average, with a high volume of 80 dB. The baby's cries are audible; you know it is a baby, but they sound sharp and somewhat fuzzy, lacking the nuance to indicate what type of crying it might be. It never sounded like adorable baby cooing, but we could tell when the baby was making sounds to themselves rather than crying. If you plan to head to the nursery every time your little one cries, this might be all you need. But if you were hoping to assess and respond based on the type of cry, or wait and see if they soothe themselves, it might not be enough.

The sound activation and screen wake for the Goodbaby works well.   Credit: Matt Lighthart

The monitor never goes completely silent, and you can always hear some level of white noise. There is even a bit of static at the highest volume. Turning on the sound activation (VOX) feature helps create a quieter experience. This works well when the baby cries, coming through within a few seconds of the crying starting. It did a good job of distinguishing baby sounds from other ambient noise. The screen also activates and dims within a reasonable amount of time to resume sleep.

goodbaby sm663 - the goodbaby day images are better than the night images, but there...
The GoodBaby day images are better than the night images, but there is distortion in the crib's shape, and the details are almost lost. The image also looks like we are looking through a screen.   Credit: Matt Lighthart

Daytime video is better than night, but neither is impressive, which isn't shocking since the camera is only 480p. It has a 90s-era blurry, grainy feel, with rainbow halos around the edges. It almost looks like a filter, making us wonder how old the technology is. The patterns on our car are all blown out, and none look sharp; some areas are so distorted that they have made their own patterns. We couldn't read the eye chart any further down than the 6th from the bottom, but even what we could see was distorted. The colors are okay, but the dark blues tend to look black.

goodbaby sm663 - the goodbaby night visuals are washed out, largely muted shades of...
The GoodBaby night visuals are washed out, largely muted shades of gray, with almost no detail left on any of our test cards. Even the bear's face largely disappears.   Credit: Matt Lighthart

Night images are washed out, muted, and blurry shades of gray. You can see major shapes and blunt edges, but anything in the shadows or with finer details is lost. We couldn't even see the clock face in the room. And the baby? The baby has no eyes, which is not what you want to see when checking on your baby in the middle of the night to relieve your anxiety.

goodbaby sm663 - the goodbaby parent unit remained connected to the camera up to 4...
The GoodBaby parent unit remained connected to the camera up to 4 walls away, at a distance of 186 ft.   Credit: Matt Lighthart

Range


The range is below average, with a measured distance of 186 feet and 4 walls before dying, but it did start getting choppy at 111 feet and 4 walls. While not the worst in the group and should be adequate for smaller homes, it might struggle with transitions between levels, more walls, or longer distances. The manufacturer claims a line-of-sight distance of 1000 ft, but this is not a great measurement for use inside a home.

goodbaby sm663 - the goodbaby is about as basic as it can get.
The GoodBaby is about as basic as it can get.   Credit: Rachael Lamore

Ease of Use


Despite being straightforward and lacking most bells and whistles, the GoodBaby still scored below average for ease of use. The setup is easy enough with auto-pairing parts, and there is no app or account you need to set up. We mounted at a height above 5 ft to get the best angle into the crib. If you don't care about a top-down angle, a lower shelf would probably suffice, but the field of view is pretty tight.

The GoodBaby user interface isn't the best, and some of the features are harder to use than they need to be.   Credit: Matt Lighthart

The buttons work well, but the design is less than ideal. To engage camera mode, you have to hit the pan-tilt button, then the arrow buttons, but they are not labeled as arrows because they have dual functionality. Then, if you stop adjusting the pan-tilt for more than a few seconds, it will disengage, and you have to start over. It would be far easier if they just had dedicated buttons.


The unit is a good size, and you can connect another camera to it to monitor multiple kids. It is highly portable with just two parts and no WiFi connection to worry about.

Battery Life


The battery life is impressive, but it could be because it doesn't do much. The manufacturer claims a run time of 10 hours. In our tests, it lasted a bit longer with continued use, up to 12 hours and 27 minutes, with the screen at full brightness continuously and the volume at 50%. This is long enough to make it through the night without plugging it in if you need to.

goodbaby sm663 - the goodbaby has the main features you need for monitoring, but it...
The GoodBaby has the main features you need for monitoring, but it lacks all the bells and whistles some parents expect.   Credit: Matt Lighthart

Features


We appreciated that the GoodBaby offers sound activation and a few other features, but nothing spectacular or that would knock your socks off. It does market an alert setting, but we couldn't get it to alert to anything, so it is hard to say what this feature does. At best, the audio stream comes on, which is just sound activation.

The GoodBaby camera is remotely pan-tilt controlled, which we appreciate at this price.   Credit: Matt Lighthart

  • 2-way talk
  • Lullaby
  • Room temperature reading
  • Remote camera, pan/tilt
  • 2x digital zoom

goodbaby sm663 - we tested the emf from the goodbaby to compare it to the...
We tested the EMF from the GoodBaby to compare it to the competition, and the level was higher than most.   Credit: Matt Lighthart

Electromagnetic Field (EMF) Levels


If EMF exposure matters to you, the GoodBaby had an average reading of 1.66 V/m in our tests. This is higher than the average, which was closer to 1.55, and significantly higher than some values closer to 0.25. Placing the camera farther from the crib can help limit exposure.

Security


This monitor does not rely on WiFi for connectivity, and therefore, the potential for security concerns is significantly less.

goodbaby sm663 - the goodbaby is a basic video monitor with a budget-friendly price...
The GoodBaby is a basic video monitor with a budget-friendly price, but the video is disappointing.   Credit: Matt Lighthart

Should You Buy the GoodBaby?


Maybe for grandma. It is one of the better dedicated monitors in the under $100 product group. However, its video is disappointing, which could be hard to overlook on a primary monitor. Does it get the job done? Sure. Can you see any details, like whether a baby's eyes are open or closed? Nope. Does the baby kind of look like a doll or a lesser demon? Yeah, in our opinion, so much detail and resolution are missing that it is hard to tell what is in the crib. While we get the appeal of the street-friendly price, it kind of falls short of what a video monitor should excel at, so we aren't likely to suggest it to most friends. That said, we can see it potentially being a good choice as a second monitor for grandma's house or for caregivers if your primary monitor is WiFi and requires an app. Being able to see every detail might not be as critical when what you'd really want them to do is respond to the crying.

What Other Video Monitor Should You Consider?


If budget is a concern, and yours can stretch, we prefer the Momcozy 1080p HD. This monitor costs more, but you get significantly better video and audio, and it is easier to use. The range is shorter, however, so you'd want to test-run it as soon as you get it home to determine if it works in your house.
—Wendy Schmitz & Juliet Spurrier, MD