Just right for exercise and health management.Cheap smart watch "Watch 2" review | Mynavi News Mynavi News Mynavi

SOUNDPEATS smart watch "Watch 2"

The "Watch 2" (4,580 yen) released in November 2021 is a SOUNDPEATS smartwatch known for its high-cost, completely wireless earphones, and is the successor to the previously reviewed "Watch 1" (released in 2020). What has evolved and what about COSPA? I tried to verify it carefully.

These days, smart watches can be roughly divided into two types: "high-end type full of functions" and "cospa type with limited functions". The former adopts Wear OS and watchOS and is equipped with a full range of communication functions such as cellular lines and FeliCa for 20,000 yen or more, and the latter is equipped with various sensors in its own OS and has various health management functions but is 10,000 yen or less. Is it a place like that?

It can be seen that there is a polarization between high-end machines and entry machines, but as far as "health management" is concerned, there is no big difference in functionality between the two. Most products have recording capabilities for various activities such as swimming and cycling, not to mention heart rate and step / distance measurements.

"Watch 2" to be taken up this time is a smart watch that is classified into the latter, entry level, of the polarization. However, with regard to health management, it has a full range of functions, including the measurement of heart rate and step count / travel distance as described above, as well as the measurement function of blood oxygen concentration (also called blood oxygen saturation, SpO2), which has been attracting attention these days. Also equipped.

* Editor's note: Watch 2 is a product aimed at improving health and is not designed as a medical device, so it cannot be used for medical purposes such as diagnosis, treatment, and prevention, including blood oxygen concentration measurement function.

I tried to measure the oxygen concentration in the blood by the orthodox (?) Method of holding my breath. The blood oxygen concentration in normal times is around 96 to 99%, but when a problem occurs in lung function, it drops to the low 90% range, and it seems that breathing is difficult and you are always drowning. .. The theory is that if you hold your breath, you can measure by lowering the blood oxygen concentration in a pseudo manner.

The blood oxygen concentration measurement function of Watch 2 can be started by tapping "Blood oxygen saturation" on the function (app) selection screen that appears when you flick the screen upward. As instructed on the screen, tap "Start measurement" while keeping it in close contact with your skin (wrist) and facing up. The blood oxygen concentration will be displayed in about 25 seconds.

When I was seated and my breathing was calm, I measured it three times, and found that the first time was 96%, the second time was 95%, and the third time was 96%. Just in case, when measured with "Blood Oxygen Wellness" of Apple Watch Series 6, the result is almost the same, 95% for the first time, 97% for the second time, 96% for the third time. It seems to work almost the same.

Next, a test after creating a stuffy state. If you hold your breath for 10 seconds and breathe for 3 seconds three times, you will feel very stuffy, so I held your breath for 10 seconds and measured the blood oxygen concentration as it was. The result was 91% for the first time, 93% for the second time, and 89% for the third time. Although there are variations, it can be seen from the figures that oxygen is not sufficient.

Compared to Apple Watch's "Blood Oxygen Wellness", the timing of the end of measurement is difficult to understand (Blood Oxygen Wellness displays the number of remaining seconds), and the previous measurement result is not displayed as an application. Although there is a difference in the degree of sophistication, the purpose of measuring blood oxygen concentration is fully fulfilled.

It has not been approved as a specific maintenance management medical device, and although it is simple, it can be said that it is a "good at hand" function for physical condition management.

The most important function expected of a smartwatch is "fitness tracking," which measures and records exercise data. It is natural to record exercise time, number of steps, and distance, and it is required to support multiple exercise modes such as walking and running, and to record information on where and how you ran in the case of running.

In that respect, Watch 2 is a significant improvement over the original Watch 1. The map service ("Kodoku Map" operated by Alibaba Group) that was linked at the time of Watch 1 had difficulty in map accuracy in Japan, but in Watch 2, "Apple Map" (iPhone) and "Google Map" Changed to (Android). The accuracy has improved dramatically.

The data recorded is step count and exercise time, target step count, heart rate, and GPS data in the case of running. When you look back at your tracking data, the calories and speed calculated based on your steps and average heart rate are also displayed.

Since the data is transferred to the cloud, you can use it on two or more smartphones. You can also use the paired iPhone when exercising, and the unpaired Android when looking back at the data at home.

Sleep measurement also works well. Perhaps because I am constantly measuring my heart rate, when I look back at the recorded data, the times when I fall asleep and wake up almost match my memory. The judgment of REM / non-REM sleep does not make you feel uncomfortable because it matches your sleep pattern (sleeping early and deep sleep until morning).

I've tried Watch 2 for about two months and haven't been dissatisfied with its basic functionality as a smartwatch. Just wrap it around your wrist and it will accumulate basic data such as steps, walking distance, heart rate, and sleep time every day, which is very useful for health management purposes.

The goodness of the battery that I saw in the first Watch 1 was also alive and well. With Watch 1, I was surprised at the energy saver's first battery level of 45% even after 3 days from full charge, but with Watch 2, that is no different. When used in the default state, the battery decreased by about 20% a day, and it operated continuously for 5 days or more without charging. It's really easy to spend a weekday without worrying about charging while using features such as notification forwarding and heart rate sensor.

The IP68 dustproof and waterproof design allows you to wash your face in the morning and take a bath in the evening with Watch 2 on. When I went to the day camp in the mountains, I washed Watch 2 with water. A smartwatch that costs 20,000 to 30,000 yen will be overwhelming and cannot be used in this way.

Although there are some parts that are worrisome, such as the prepared dial design (about 60 types) is not good, and the Japanese translation of the application is strange, you can check the blood oxygen concentration (for reference) in case of emergency. Above all, the overwhelming cospa feeling that you can buy it at Amazon.co.jp for 4,580 yen. It is a "generic smart watch" that has a good battery life and can be fully used.