What is the best smart watch to monitor your sleep?

The latest smartwatch models are rapidly being completed and one of the most offered features is the sleep monitor. With this feature, the user gets a detailed graph on the watch (and cell phone) screen, which often collects sleep stages and other important data during the night.

This is already a very common feature, and most of all the watches I’ve experienced in the last few months are functional. Some are more complete, others are more sensible, the fact that they all have an integrated sleep monitor.

The problem is that some models, despite being very complete in other features, leave the required amount of sleep monitoring. Or at least that’s what I saw when comparing the recorded data of different models.

When I used the Huawei Watch GT 3 – one of the latest models from the Chinese company and one of the best models on the market – I noticed that the result I got with it was very different from the other models I had. Already tested.

What is the best smart watch for sleep monitoring? (Photo: Eric Taxira / Canaltech)

With that, I decided to extend the review to more models and compare more deeply the sleep monitors in different smartwatches. So, I had a big picture to suggest which is the best option for you if you are looking for something to record your data overnight.

It is important to note that these watches are not necessarily the best overall set, but they do work best for sleep monitoring.

Analyzed model and method of comparison

For this analysis, I compared the data of major smart watches from the largest manufacturers available in the market: Amazfit GTR 3 Pro and Amazfit GTS 3, Huawei Watch GT 3, Galaxy Watch Active, Apple Watch Series 7. Also used more professional models, such as Garmin Instinct 2 and Garmin Fenix ​​6 Pro Solar.

I didn’t get a chance to personally test the wearability, but I also added to my list the records made by my colleague Philip Jankira for the Galaxy Watch 4 – a product analyst here at Canaltech, who Uses this device. Life

To keep a measure of the reliability of the results, I wore two watches one night, one on each arm, and changed their position the next night to retrieve data from both wrists.

Thus, I can confirm that some models are more loyal when recording sleep data, while the results of a more specific device are more inconsistent, in this case the Huawei Watch GT 3. But I will talk more about that.

Garmin Fenix ​​6 Pro Solar and Garmin Instinct 2

These are the models I enjoyed the most using for testing and monitoring sleep, and I definitely rate them as the best option if you find something suitable for you in this regard. Looking for

However, it is important to note the price range of these devices. Because these are more professional-oriented watches, they are especially valuable for athletes who want a more accurate matrix on physical activity.

Garmin Fenix ​​6 Pro Solar is one of the latest models of fitness trackers (Photo: Ivo Meneghel Jr / Canaltech)

The Garmin Fenix ​​6 Pro Solar, for example, starts at R $ 8,000 and can easily exceed R $ 10,000. Instinct 2 is more “affordable”, but more than R $ 5,000. Prices aside, I will explain why I have described them as the best choice for sleep monitoring.

Garmin watches are the ones that track the most information during sleep. In addition to light sleep times, deep sleep and REM sleep – as identified by almost any watch – also show how the pulse oximeter and respiration rate vary during the night.

Garmin watches have the most comprehensive report on sleep monitoring (Photo: Bruno Bertonsen / Canaltech)

Another important piece of data is about when the user spent the night restless or awake. This way, you can gain more control over your sleep health and know how much pain you have during the night, even if you are not fully awake.

Amazfit GTR 3 Pro and Amazfit GTS 3

If you want to choose the best smart watch to monitor your sleep at a price that does not scare your pocket, then Amazfit models are the best option.

The latest watches in the Amazfit range are also the best choice for sleep monitoring (Photo: Ivo Meneghel Jr / Canaltech)

In the last few months, I have tried two models of smart watches from this brand: Amazfit GTR 3 Pro and Amazfit GTS 3. Both basically offer the same features for sleep monitoring and, despite the superiority of the GTR 3 Pro, they both offer. Similarly in this question.

In addition to the traditional sleep phases – light, REM or deep – wearable allows you to monitor the user’s breathing rate and heart rate during sleep. The report also warns that if there is difficulty breathing at night and if this level is dangerous to health.

Despite being more affordable models, both offer more complete results than Samsung’s Galaxy Watch 4 line, offering more accurate sensors for health monitoring.

Amazfit watches are perfect for sleep monitoring (Photo: Bruno Bertinsen / Canaltech)

As I said, their price range is much cheaper: the Amazfit GTS 3 R sells between R $ 1,200 and R $ 1,300, while the Amazfit GTR 3 R is between R $ 1,200 and R $ 1,700.

Galaxy Watch Active and Galaxy Watch 4

I only tested the Galaxy Watch Active, but I also collected Galaxy Watch 4 data from Canaltech product analyst Felipe Junqueira. From its experience with this and other smartwatches, this model is very loyal to monitoring and provides data compatible with other analyzes performed.

Galaxy Watch 4 is one of the sleep monitoring options (Photo: Ivo Meneghel Jr / Canaltech)

However, I would like to emphasize that despite having more modern models and offering more complete monitoring matrix – such as ECG, for example – the amount of data obtained during sleep is not as complete as that of Amazfit or Garmin.

In any case, the South Korean giant’s wearable devices can also record information about the level of oxygen saturation in the blood and snoring – plus, of course, up to the same sleep stages that have been mentioned so far. Gone are the other models.

The Galaxy Watch 4 offers good matrix in the Sleep Monitor report (Photo: Philip Jankira / Canaltech)

The Galaxy Watch Active has already been discontinued by Samsung and is rarely found in the market, but the Galaxy Watch 4 R sells at prices starting at $ 900.

Huawei Watch GT 3

It was this model that inspired me to do this analysis. Huawei Watch GT 3 is one of the flagships of Chinese company and is the best in the market to track your health and physical activities.

And, for those who have never used other smart watches or are not accustomed to monitoring their sleep rhythm, it seems like it’s perfect for monitoring, but it wasn’t what I used. Seen during

Huawei Watch GT 3 lacks accuracy in monitoring (Photo: Ivo Meneghel Jr / Canaltech)

This is because the results it obtained were very different from any other smartwatch or smart band I have recently experienced. Although any watch gives me an average of 40 to 60 minutes of deep sleep, it lasts two hours, and sometimes closer to three.

The difference in numbers was also repeated in light sleep and REM results. In fact, Huawei’s report showed closer numbers for deep and light sleep, while REM was lower. In contrast, the other clocks analyzed did not identify in this way and contained data that was more consistent with each other.

The Huawei Watch GT 3 also has many sleep monitor features, but it doesn’t work well (Photo: Bruno Brittenzin / Canaltech)

However, I emphasize that this is not necessarily a defect in the Huawei Watch GT 3 – or other watches of the brand. It is possible that the way it monitors sleep is different from competitors. However, if you want something more accurate, it is recommended to choose a model that has more data with other wearables in the same category.

The Huawei Watch GT 3 has a price range ranging from R $ 1,700 to R $ 1,900.

Apple Watch Series 7

The Apple Watch Series 7, unfortunately, is at the bottom of the list. This is because its sleep monitor does not present so much data to the user, it does not even show the time in each sleep phase. In fact, the only metric – at the moment – is how many hours a user slept during the night.

Apple Watch Series 7 still doesn’t work well with Sleep Monitor (Photo: Ivo Menegal Jr. / CanalTech)

I’ve put it on the list for one reason in particular: Apple has already promised that one of the new things to come with the Watch OS 9 – the next version of the brand’s watch operating system – is a full sleep monitor. Is.

That way, when the update is definitely available, I’ll review the clocks again and see if Apple’s system delivers reports as good and complete as we have with Amazfit and Garmin. Prices for the Apple Watch Series 7 start at R $ 3,000.

Apple Watch Sleep Monitor is quite limited (Photo: Bruno Bertinsen / Canaltech)

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