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Smartwatches: Xiaomi Mi Watch versus realme Watch S – Is the higher price worth it?

Big is beautiful. Externally, the Xiaomi Mi Watch and the realme Watch S are very similar. While the Mi Watch is above the 100-Euro (~$118) mark just like the recently introduced realme Watch S Pro, the Watch S is an attractive tracker in the lower price segment. Our side-by-side comparison will reveal whether the Watch S is a price breaker and for whom the additional price is worth it.
Inge Schwabe (translated by Stephanie Chamberlain), 🇩🇪 🇮🇹 ...

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realme Watch S
Processor
n/a
Display
1.30 inch, 360 x 360 pixel 278 PPI, full-touch, TFT, glossy: yes
Connections
Audio Connections: ⊖, Brightness Sensor, Sensors: 3-axis accelerometer, wear monitoring, heart rate sensor
Networking
Bluetooth 5.0 BLE
Size
height x width x depth (in mm): 12 x 47 x 47 ( = 0.47 x 1.85 x 1.85 in)
Battery
390 mAh Lithium-Polymer
Additional features
Speakers: ⊖, Keyboard: 2 buttons, realme Link, Compatibility: Android 5 ; Corning Gorilla Glass, waterproof
Weight
29 g ( = 1.02 oz / 0.06 pounds) ( = 0 oz / 0 pounds)
Price
79.99 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Xiaomi Mi Watch
Processor
n.a.
Display
1.39 inch, 454 x 454 pixel 326 PPI, full-touch, AMOLED, glossy: yes
Storage
n.a.
Connections
Audio Connections: ⊕, Brightness Sensor, Sensors: accelerator, gyroscope, geomagnetic sensor, air pressure sensor, heart rate
Networking
Bluetooth 5.0 BLE, GPS
Size
height x width x depth (in mm): 11.8 x 45.9 x 53.35 ( = 0.46 x 1.81 x 2.1 in)
Battery
420 mAh
Additional features
Speakers: ⊖, Keyboard: 2 buttons, Keyboard Light: yes, Mi Watch, magnetic charging dock, user manual, Xiaomi Wear/Wear Lite, 24 Months Warranty, Compatibility: Android 5 , iOS 10 ; GNSS: GPS, GLONASS, Galileo, BDS; water resistance: 5 ATM, waterproof
Weight
32 g ( = 1.13 oz / 0.07 pounds) ( = 0 oz / 0 pounds)
Price
119 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

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Case and display – Differences only at second glance

At first glance, the two large watches look very similar with a uniformly dark design. They both feature straps in the standard 22 mm size with a quick-release buckle that can be exchanged as desired. In terms of case color, only Xiaomi offers dark blue or beige alternatives. The case of the Xiaomi Mi Watch is made of plastic, while that of the realme Watch S is made of aluminum and is marginally lighter. The Watch S is certified according to the IP68 standard, and the Mi Watch is water-resistant up to 5 ATM and consequently certainly suitable for swimming.

The display is not entirely flat in both devices: Xiaomi rounds it off towards the edge, while realme gives it a slanted bezel towards the edge. One thing that is not noticeable at first glance is that although the Watch S is still slightly larger than the Mi Watch (1.81 inches) with a diameter of 1.85 inches, its display is smaller than in the Mi Watch (1.39 inches) with 1.3 inches between the wide bezels. With a resolution of 360x360 pixels, the Watch S only achieves 278 ppi. The Mi Watch's pixel density of 326 ppi is on par with other smartwatches of this size such as Huawei's Watch GT 2 Pro or the Mobvoi TicWatch Pro 3.

In addition, the AMOLED display of the Mi Watch makes the watch faces look brighter than on the realme Watch S. The design options are extensive in both devices with more than 100 watch-face variants, but both lack the option of customizing them. An update following our review of the Watch S added the option to change the watch face not only via the app but also directly on the wrist, just like on the Mi Watch.

Both regulate the display brightness automatically with the help of a light sensor. Only the Mi Watch has an always-on display. Since neither of them has NFC, they don't support mobile payments via the smartwatch.

Xiaomi Mi Watch, contents in the box
Xiaomi Mi Watch, contents in the box
realme Watch S, contents in the box
realme Watch S, contents in the box
Xiaomi Mi Watch
Xiaomi Mi Watch
realme Watch S
realme Watch S
PPG sensor in the Mi Watch
PPG sensor in the Mi Watch
PPG sensor in the Watch S
PPG sensor in the Watch S
Mi Watch left side
Mi Watch left side
Watch S left side
Watch S left side
Mi Watch right side with two buttons
Mi Watch right side with two buttons
Watch S right side with two buttons
Watch S right side with two buttons
Charging the Mi Watch
Charging the Mi Watch
Charging the realme Watch S
Charging the realme Watch S

Handling and apps – realme app isn't available for iPhones

The corresponding smartphone app for the realme Watch S is only available in Google's Play store, so you won't get far with an iPhone. Xiaomi's Wear app is available for both platforms; however, the Xiaomi smartwatch behaves differently under iOS than under Android in some situations, which we point out in our review of the Mi Watch.

Both wearables are controlled via the touchscreen and two buttons on the sides. The lower button launches the workout app on both devices, or alternatively a previously assigned workout on Xiaomi.

Xiaomi installs a few more apps on the Mi Watch than realme on the Watch S as the following app overview shows. The realme apps are also found on Xiaomi, including a timer, alarm clock and stopwatch, breathing exercises, a workout app, and the latest workout logs as well as remote controls for the smartphone music player and its camera. The latter is still in Beta status with Xiaomi. In our review of the Mi Watch, it worked with the iPhone 12 Pro and an Honor V20, but that might not be transferable to all manufacturers.

In addition to the suite of tools, we find apps for the compass and the altitude sensor on the Mi Watch, which the Watch S lacks, as well as apps for extended health monitoring, another feature that the Mi Watch offers that the Watch S does not. More about that under the Health and Fitness section.

App overview on the Xiaomi Mi Watch
App overview on the Xiaomi Mi Watch
App overview on the realme Watch S
App overview on the realme Watch S
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Telephone, messaging

If the smartphone receives a call, it can be rejected or alternatively silenced via both wearables.

Emojis are a weak point in both smartwatches: The Watch S doesn't display them at all, and the Mi Watch only shows some of them; in addition, they lack colors and are so small that you can hardly identify them. For comparison, you can see the same notification on a smartwatch with Wear OS (the Mobvoi TicWatch Pro 3 in this case).

Limited display of emojis on the Xiaomi Mi Watch
Limited display of emojis on the Xiaomi Mi Watch
No emojis on the realme Watch S
No emojis on the realme Watch S
Emoji display on the Mobvoi TicWatch Pro 3 (Wear OS)
Emoji display on the Mobvoi TicWatch Pro 3 (Wear OS)

Voice assistant

Neither wearable has a speaker, but the Mi Watch at least has a microphone that can be used to send commands to Amazon's Alexa voice assistant. In our test, communication with Alexa worked flawlessly in combination with the Honor V20; under iOS, the Mi Watch first had to reactivate the connection to the iPhone in most cases, so that it handled almost every request only in the second attempt.

No voice assistant is implemented on the Watch S.

Health and fitness

Heart-rate monitoring is among the standard features of a fitness tracker. In view of this, it's surprising that both the Mi Watch and the previously reviewed Mi Watch Lite measured pulse so inaccurately in our tests. Compared with a chest strap from Polar, both often registered 10 beats more or less. Although the realme Watch S wasn't always in line with the chest strap either, the deviation was smaller, and the measurement was more stable overall. Both issue an alert if desired when the heart rate is outside the norm. In the realme app, you can define the limits for this alarm and also adjust the measurement interval.

Both measure blood oxygen saturation levels manually, and at night during sleep, they don't do several automatic measurements like the TicWatch Pro 3 or the Fitbit Sense, for example. Comparison measurements with a medically certified pulse oximeter show that the realme Watch S has a high level of compliance and a low average deviation of 0.7 percentage points. With the Mi Watch, the average deviation was of 1.2 percentage points.

While the Watch S limits activity tracking to basic functions such as movement reminders, step counting, and calorie consumption, Xiaomi expands the Mi Watch's health functions to include an energy indicator and stress barometer, among other things. In combination with the iPhone, it synchronizes health parameters like sleep data and activity energy with Apple Health. Neither device connects to Google Fit.

Workout tracking

The Xiaomi tracker automatically detects running and fast walking. When working out using the training app, both control the smartphone's music player without having to leave the workout screen. As a workout assistant, the Watch S is significantly inferior to the Mi Watch. It has neither GPS nor an altimeter and only tracks the route when running or cycling in combination with the smartphone. Its training app only supports 15 sports compared to over 100 on the Mi Watch.

Users who use the Xiaomi tracker for their daily workout will also appreciate the professional analytics and the fact that the lower button opens their preferred workout mode if desired and not the top-level workout app instead.

The benefits of health and fitness tracking ultimately also depend heavily on how the manufacturers present the data. This is documented in the review of the Mi Watch and the review of the Watch S with numerous sample watch and app screenshots in each case.

Battery life – realme runs and runs

The manufacturers estimate the average runtimes of their wearables to be almost the same: 15 days for the Watch S and 16 for the Mi Watch. However, we only managed about 10 days without the always-on display in our real-world tests with the Mi Watch, and 4 to 5 days with the always-on display enabled.

The realme smartwatch lacks both an always-on display and GPS; overall, it proved to be more energy-efficient in our review. In the test, the battery lasted rather longer than stated by the manufacturer. A killer feature is the wear detection that realme implements via a sensor in the Watch S, at least if you value being able to rely on the smartwatch for as long as possible, even if you don't wear it permanently. In this case, the realme Watch S reduces its power requirements to such an extent that the battery of our test device survived the 3 months between our review and this comparison. With a remaining capacity of 10, the watch was immediately ready for use.

Verdict

In comparison: Xiaomi Mi Watch and realme Watch S
In comparison: Xiaomi Mi Watch and realme Watch S

Xiaomi's Mi Watch is undoubtedly the winner in the comparison of the two Chinese wearables. The larger and sharper display as well as additional hardware like a microphone, GPS, and a barometric sensor, from which features like voice assistant and route tracking emerge, are in its favor.

There are hardly any arguments that speak for the Watch S and against the Mi Watch. Especially for athletes, the Xiaomi smartwatch is the better choice.

Not only is the Mi Watch recommended for athletes because of the better hardware. While the workout log on the realme smartwatch remains rudimentary and is limited to one page in the associated app, Xiaomi evaluates the workout data better and creates descriptive diagrams that can be viewed both on the smartphone and on the watch.

The realme Watch S has its better battery life and a more reliable measurement of pulse and blood oxygen going for it - in addition to its price, which is about half as low.

Those who still want to wait can also take a look at the realme Watch S Pro in parallel. Its features are close to those of the Mi Watch. As soon as the Pro version of the realme smartwatch is available for review, we'll let you know how it performs in practice.

Price and availability

The realme Watch S and the Mi Watch aren't officially available in the United States, but you can already find them on ebay. The realme Watch S has several listings starting at $100. Moreover, the Xiaomi Mi Watch has some listings here too that start at around $125. If you prefer, you can also wait for both devices to pop up on Amazon.

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Inge Schwabe
Editor of the original article: Inge Schwabe - Senior Tech Writer - 132 articles published on Notebookcheck since 2017
I initially earned my pocket money by filing paper records and earned my first salary by destroying them: For years I have supported digital transformation processes in both large and small IT projects. With two successfully completed degrees, in Computer Science and Technical Communications, I managed to combine my expertise with my passion for writing. I have written articles for connect, c’t, Mac & I, and the Microsoft and Samsung portals. With Notebookcheck, I sometimes move my workplace outdoors into nature so I can put fitness trackers and smartwatches to the test beyond the confines of my desk.
contact me via: @mobilewelten, Facebook, Xing
Stephanie Chamberlain
Translator: Stephanie Chamberlain - Translator - 409 articles published on Notebookcheck since 2020
I've been fascinated with technology ever since I got my very first Android smartphone, which was quite a while ago. The power packed into such a small footprint still amazes me. Learning to program made my understanding of technology deeper, and at the same time, it expanded my interest to the area of desktop computers and laptops. All this led me to enjoy reading and watching reviews of new devices, and that's how I stumbled upon Notebookcheck. I immediately found their reviews to be very comprehensive, and luckily, I've even had the chance of translating them since 2019. When it comes to the huge field of technology, I'm currently also interested in specializing in Java programming.
contact me via: LinkedIn
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> Notebook / Laptop Reviews and News > Reviews > Smartwatches: Xiaomi Mi Watch versus realme Watch S – Is the higher price worth it?
Inge Schwabe, 2021-03-26 (Update: 2021-03-29)