Huami Amazfit GTS 3 Review: Best Sport Watch For 2021?


Huami Technology occupies a pivotal position. As early as the end of 2019, it determined its mission to “connect health with technology” and continue to lead innovation in both technology and products. For example, Huami launched the GTR 2 and GTS 2 series of smartwatches last year, which have won praise from many users for their stylish appearance and professional health monitoring.

On October 12, Huami held the Amazfit 2021 global annual new product launch conference. For the first time, “Amazfit” launched the Chinese name “Yuewo”, which means to be born upward and constantly surpass oneself. At the same time, a new generation of Amazfit GTR 3 and GTS 3 series smartwatches was also released.

What we experienced this time was one of the Amazfit GTS 3 smartwatches in obsidian black.

Huami’s new Amazfit GTR 3 and GTS 3 series of watches released this time are equipped with the Zepp OS operating system developed by Huami for the first time. According to the official statement, the overall design of Zepp OS is inspired by natural elements. , Reshaped a new color system, allowing users to feel the natural breath on the watch.

The bottom layer of the Zepp OS operating system is developed based on the FreeRTOS microkernel open-source code. It has three characteristics of lightness, smoothness, and practicality. The system package is less than 100M, but it is perfectly compatible with different configurations.

Hua also said that rice, Zepp OS than before operating power consumption by 65% battery life upgrade 190%, based on continuous monitoring of health data 7×24 hours wearable devices, can be significantly improved by using an interactive experience and other features.

Not only the operating system has been upgraded, but Huami also brought the industry-leading 6-channel configuration of the BioTracker PPG biological tracking optical sensor 3.0 in its new products, which significantly improved the detection accuracy in terms of health and sports.

In addition to the software and hardware upgrades, the OxygenBeats algorithm developed by Huami Technology has dramatically improved blood oxygen measurement’s success rate and accuracy, which is nearly twice as fast as the previous generation GTS 2. 15 seconds.

Next, let’s feel the experience by hand. The following picture shows the specific parameters of Amazfit GTS 3:

Design & Appearance

Please take out the Huami Amazfit GTS 3 body, the shape continues the integrated design of the previous generation, and the side crown is also retained.

The watch body is made of aluminum alloy, and the edges and sides are over-curved. It feels warm and smooth to the touch, without the problem of cutting hands.

The screen adopts a 1.75-inch, 390×450 resolution AMOLED super retina screen, with a pixel density of 341PPI, a 14% increase in viewable area compared with the previous generation display effect is more precise and more delicate. Part of the interface also supports a refresh rate of 60 frames. , The sliding is smoother.

The thickness of the Amazfit GTS 3 watch body has reached 8.8mm, and the weight is 24.4g, which is thinner and lighter than the previous generation. The whole body has only one crown button.

Huami’s self-developed bio-tracking optical sensor has been upgraded to an industry-leading 6-channel configuration. In terms of heart rate, blood oxygen, and other monitoring functions, the accuracy and speed are improved compared with the previous generation.

The opening in the upper right corner is a microphone. Amazfit GTS 3 supports offline voice, and some functions of the watch can be controlled by voice.

The classic pin buckle strap made of silicone material makes it easy to disassemble and assemble. If there are higher requirements for the fabric of the belt, the official website also sells straps of different materials such as fluoroelastomer or leather. Amazfit jumps to the magnetic charging base included in the GTS 3 package can be fully charged in about two hours.


First experience from the main screen. Amazfit GTS 3 can swipe left and right to cycle through card information such as the secondary screen, sleep, heart rate, and weather.

Short press the side crown to call out the application menu of the watch. In addition to the screen control, you can also use the side crown to scroll. With a linear motor, you can also feel a very spiritual vibration effect on the watch.

Moreover, the side crown can also be customized by long-pressing and set to functions such as one-key measurement and voice assistant. It is worth mentioning that the Zepp OS operating system adopted by Amazfit GTS 3 brings a smoother experience while also redesigning various visual elements, making it more youthful and energetic.

Part of the interface can support up to 60 frames of animation effects, and the working experience is upstream and downstream, comparable to mobile phones. There is no freeze during the incident.


In terms of exercise function, Amazfit GTS 3 is equipped with 150+ exercise modes and is equipped with a brand-new self-developed professional exercise algorithm, which can learn the maximum oxygen uptake (VO2 max), recovery time, exercise load (TL), and Data analysis of exercise effect (TE).

The watch will vibrate during walking, running, cycling, etc., the clock will shake to confirm whether you are in motion. Of course, you can ignore the look reminder and continue exercising, and the watch will automatically perform exercise monitoring data statistics.

After the exercise, Amazfit GTS 3 will vibrate again and directly give data such as exercise time and training effect. Because of the support of five positionings (GPS, Beidou, GLONASS, Galileo, QZSS), you can also view the trajectory of the movement.

The exercise data can also be viewed on the card page of the main screen, and the progress bar with a three-color circle shows whether the amount of activity is up to the standard today.

Amazfit GTS 3 also has a built-in PAI health evaluation system. In daily or exercise, combined with daily activity intensity and personal physiological data, multi-dimensional dynamic, comprehensive evaluation, PAI vitality index can be obtained.

The PAI system can precisely set the difficulty of obtaining PAI medals according to your athletic ability and various physiological indicators.

Health and sleep

Amazfit GTS 3 supports innovative blood oxygen, 24-hour heart rate, pressure, sleep, and other monitoring in terms of health. The “one-button measurement” function takes only one minute, and you can instantly check your anxiety, blood oxygen, and heart rate: Health and other data.

In terms of healthy sleep monitoring, the biggest surprise is that you can intuitively understand your sleep level on the watch without an App, clearly listing various data such as light sleep, deep sleep, rapid eye movement period, and awakeness.

However, you can only view the sleep data of the day on the watch. If you want to view the past sleep history, you need to use the “Zepp” mobile app.

Let’s take a look at the mobile app that is compatible with Amazfit GTS 3.

Mobile App

When using Amazfit GTS 3 for the first time, you need to use the “Zepp” mobile App to associate and activate the watch. After entering the main interface, you can see that the bottom is divided into four main items. The “Home” page visually displays all kinds of data collected by watch monitoring.

“Health” page: You can directly start exercise and fitness goals, and detect snoring, sleep aid rhythm, etc., during sleep.

“Courses” page: The primary function is to learn the related content according to the user’s fitness needs. “My” page: You can easily view the set courses and goals, and you can also view or set various functions of the wearable device.

In terms of experience, this mobile App has clear operation logic, is simple to use, without too many advertisements and red dot reminders, and only focuses on wearable device services. The author of this refreshing and clean App would like to give considerable praise.

Since the received watch is a test prototype, and the mobile App is also an internal beta version, there is only one dial on the dial page, and no apps have been put on the app store.

After the official release, Huami will release the SDK component package for the Zepp OS operating system. Developers and users can write light applications similar to WeChat applets by themselves. At that time, Amazfit GTS 3 will significantly increase the playability of applications and dials.

Read Also: OPPO Watch Free Review: Your Watch Knows Your Sleep Better


In terms of appearance, while maintaining a stylish appearance, Amazfit GTS 3 has once again broken through the thickness limit of smartwatches compared to the previous generation. The watch body is 8.8mm, and the weight is lighter to 24.4g, which brings more lightness and refinement. Experience.

During the experience, the Zepp OS operating system equipped with Amazfit GTS 3 plus a 60-frame display made the 1.75-inch screen extremely smooth to operate.

This Huami Amazfit GTS 3 watch is equipped with Zepp OS operating system + BioTracker 3.0 PPG biological tracking optical sensor + OxygenBeats blood oxygen engine. The core only serves health and sports, and there are no other redundant functions. Whether it is a watch or a mobile app, it only gives users a purer experience.

In terms of battery life, when the functions of blood oxygen, pressure, sleep monitoring, and automatic exercise recognition are all on, the power consumption is about 20-25% a day, and it can be used for about 5 to 7 days for heavy use.

Of course, these functions themselves consume more power. Turning off some parts can achieve the 12-day long battery life officially advertised, but this loses the meaning of the watch to manage health and exercise. Considering that it only takes 2 hours to charge it daily, the frequency of charging once a week is not too troublesome.

In terms of experience, the author feels that Huami’s Amazfit GTS 3 is a performance improvement and the original chip, sensor, and algorithm. Now it has more systems and has achieved self-research—another upgrade of orientation.

For users who pay attention to health management and want to pursue life quality and efficiency, the Amazfit GTS 3 launched by Huami, a professional wearable device, is entirely guaranteed in terms of quality so that you can consider it.

In terms of price, this Huami Amazfit GTS 3 is 899 yuan, and there are three color options: obsidian black, mist white, and soft sand brown.


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