Recently, Huami released a new product, the Amazfit GTR 2 smartwatch, which is equipped with the new BioTrackerTM 2 PPG bio-tracking optical sensor independently developed by Huami Technology, which supports blood oxygen saturation detection. In fact, Amazfit X, which participated in crowdfunding overseas as early as April this year, already has a blood oxygen saturation detection function. At this time, Amazfit GTR 2 will be more complete, and it is believed that the wearable device will monitor the physical health of the human body to a new level.
In addition to the new blood oxygen saturation detection function, Huami Amazfit GTR 2 also supports nap monitoring and sleep respiration quality assessment compared to the previous generation, allowing you to have a more comprehensive understanding of your resting state.
In daily use, Huami Amazfit GTR 2 is a comprehensive upgrade. Previously convenient functions such as independent GPS, NFC, and Alipay offline payment have been continued. Speakers and microphones have also been added, and new functions such as Bluetooth calling, music playback, offline voice assistant + Xiao Ai students have been added.
Especially offline voice control gives Huami Amazfit GTR 2 a brand new operation mode, making all-weather voice control possible. The Huami Amazfit GTR 2 smartwatch released this time has two versions, namely a sports model and a classic model. The difference between the two is mainly reflected in the material of the body and strap. The fast technology received this time is made of stainless steel. Classic model with body and leather strap. Next, let’s take a look at what kind of daily experience it has through a detailed evaluation.
Amazfit GTR 2 Design & Appearance
Open the package and take out the body. Huami Amazfit GTR 2 uses a dial composed of a whole piece of glass. The scales are directly engraved on the glass surface. The entire dial is integrated and has a different texture with the luster of the glass.
In addition, Huami Amazfit GTR 2 uses a 1.39-inch AMOLED screen with 326 PPI, a color gamut of 100% NTSC, and a brightness of up to 450nit. In daily use, both the color and content display are fuller and clearer. A good screen naturally requires a good deal. The dials provided in the Huami official APP are also very rich. There are also a variety of custom styles that can be used as the dial by choosing the background. 
The surface glass adopts a slightly curved design, the glass does not bulge too much, and the possibility of damage when dropped is less. The table mirror of Huami Amazfit GTR 2 is made of glass, coupled with ODLC diamond-like carbon coating process, which is quite wear-resistant in daily use. The body is made of aluminum alloy with two physical buttons on the side.
It the bottom, as many as four sensor openings suggest a comprehensive upgrade of the detection function, especially the addition of the blood oxygen detection function, which can more comprehensively obtain the physiological information of the human body.
The microphone opening is visible at the bottom of the dial, and Huami Amazfit GTR 2 also supports Bluetooth voice calls, voice control and other functions. The leather strap is more textured than the silicone strap. The strap supports quick release, you can change your favorite style later. The included magnetic charger is very mini.
Amazfit GTR 2 Health Modes
In terms of health, the focus of the Huami Amazfit GTR 2 smartwatch is undoubtedly the blood oxygen detection function. In addition, sleep monitoring, heart rate monitoring, and PAI health assessment systems are also very useful.
Blood oxygen saturation test
The method of use is very simple. Select the blood oxygen detection function on the dial and keep the wrist flat for 1 minute to complete the blood oxygen measurement.
Because the accuracy of the measurement needs to be taken care of, the blood oxygen detection, like most current products, only supports a single manual blood oxygen detection, and the value of each measurement will be displayed in the form of dots in the watch and mobile APP.
Paying attention to one’s blood oxygen level on a daily basis is very useful for avoiding work under the condition of low blood oxygen saturation and dizziness. In plain areas, the blood oxygen saturation level should not be less than 94%, otherwise the oxygen supply is insufficient, and you need to rest or even inhale oxygen in time.
Heart rate monitoring
Huami Amazfit GTR 2 supports all-day automatic heart rate monitoring. The frequency of heart rate detection can be changed in the settings to obtain icons with different accuracy. In the APP, you can also classify the different stages of a day’s heart rate to understand the changes in your physical state.
Sleep monitoring
Huami Amazfit GTR 2 supports sleep monitoring, which can record the length of deep sleep, deep sleep and REM (rapid eye movement) phases, and compare your sleep data with your previous sleep patterns and people in the same area. Sleep data supports superimposition with heart rate data, which can comprehensively judge your physical condition at night. In addition, Huami Amazfit GTR 2 also supports nap monitoring, which can record the length of nap and the proportion of deep sleep and deep sleep.
In addition, there is also the sleep breathing quality assessment function in the test. If the user has physiological problems such as snoring and obesity, hypoxia will occur from time to time during sleep, ranging from being tired after waking up, and causing sudden death during sleep. It can help us find problems in time, wear breathing aids, and prevent danger.
PAI Health Assessment System
Huami Amazfit GTR 2 supports the PAI health assessment system. It can generate an exclusive health goal for each person based on physiological data such as a person’s age, weight, gender, and so on. By completing this goal every day, you can get the corresponding PAI vitality index.
The PAI vitality index is different from the traditional calculation of scores by step counting and exercise time, but it combines heart rate sensors, acceleration sensors, etc. to comprehensively record all exercise conditions in a day. There are even specific exercises, time, and intensity suggestions in the APP, which can use fragmented time to produce the best exercise effect.
Amazfit GTR 2 Sports Modes
Huami Amazfit GTR 2 uses a GPS+GLONASS dual positioning system, which can operate independently without the assistance of a mobile phone. The combination of dual positioning systems can also ensure that the positioning system can continue to work stably when used outside. In terms of sports mode, Huami Amazfit GTR 2 still supports 12 types, consistent with the previous one.
It supports 50 meters of water resistance. You don’t need to worry about water ingress when you are exercising. You don’t even need to worry about washing the dial directly with water. It comes with a waterproof coating, so there will not be too much residue after water. The individual drops of water can be restored by gently wiping. Clean state.
Choose the walking mode and simply experience the exercise assist function of Huami Amazfit GTR 2. After you choose to walk, GPS will start searching for signals, and after searching, you can click GO to start exercising. During exercise, the dial will display related exercise information and heart rate. After the exercise is over, you can also view detailed statistical charts such as path, heart rate, and stride through the dial.
The screen of Huami Amazfit GTR 2 is excellent in both resolution and color, so even if there is no mobile phone, the watch end can independently complete functions such as sports information statistics and detailed chart display.
On the mobile phone APP, the display of data and charts on the big screen is more intuitive, and the recorded path can be selected and combined with the digital map to learn more about where you are passing by.
Functional Experience
In terms of convenient functions, Huami Amazfit GTR 2 supports NFC, mobile payment, barometer, compass, a message prompts, and other functions the same as the previous generation, and thanks to the upgrade of the microphone and speaker on the hardware, the new voice control, Music playback, and Bluetooth call functions are not small highlights.
All-weather voice control
Voice control functions are not uncommon, but because the connection between the watch and the mobile phone is difficult to stabilize, the actual experience of those voice control functions is often far from what we imagined.
The combination of offline voice control + Xiao Ai on Huami Amazfit GTR 2 can ensure that the watch function can be started and operated conveniently through offline voice control at any time. If you encounter some complicated problems, you can use Xiao Ai Shot.
Every time Huami Amazfit GTR 2 lights up the screen, a blue icon will appear at the bottom, which proves that offline voice is working. Moreover, the offline voice will only be activated within a period of time when the screen is on, ensuring that the message will not be missed while avoiding too much impact on battery life.
Because it is offline voice control, Huami Amazfit GTR 2 will only respond to existing commands. The control commands are very simple. After you are familiar with it, you can easily perform an operation or open any function in one sentence.
Offline voice recognition to “open compass” command
To use Xiao Ai, you need to open the Xiao Ai application. There are many ways to start it. You can set a physical button to start, or you can activate it by offline voice. On the premise that the paired mobile phone has the Xiao Ai app, you can use the watch to realize the normal use of Xiao Ai.
Music playback and Bluetooth call
Huami Amazfit GTR 2 comes with music APP and NetEase Cloud Music APP. After connecting to a Wi-Fi wireless network, you can use its own speakers to play local songs or log in to NetEase Cloud to play music online.
In addition, Huami Amazfit GTR 2 with speakers and microphones can also be used for Bluetooth calls, but it should be noted that the mobile phone must first complete the authorization and Bluetooth pairing connection before the function can be triggered normally.
Card package function
Huami Amazfit GTR 2 supports NFC function, so it also supports NFC access control and use as a bus card, and can even simulate a blank card to directly write encrypted access control information.
Mobile payment
Support mobile payment, after using mobile Alipay to scan the code and bind the device, you can recharge and use it.
Small tools
Compass, barometer, stopwatch and other functions are all concentrated in small tools, which is convenient for centralized viewing when needed, saving search time.
Smart Assistant
On Huami Amazfit GTR 2, there is also a brand-new smart assistant function. Its design is similar to a negative screen of a mobile phone. It can display recently opened functions and basic health information. The centralized display of all information is very intuitive, and some functions can be displayed. It is also more convenient to open it directly here.
Endurance
In terms of battery life, the author turns on automatic heart rate detection + auxiliary sleep detection, all-day pressure monitoring + sleep respiration quality monitoring, and under the premise of exercise and frequent use of the watch with the screen on, the power consumption is 25% after using it for nearly 46 hours. Under the author’s heavy usage habits, the battery life of Huami Amazfit GTR 2 is about 9 days.
Considering that this is a test machine, there is still a lot of room for optimization in daily power consumption. In the future, when all-day pressure monitoring and sleep-respiratory quality monitoring are turned off, battery life will be closer to the official standard of 14 days.
Read Also: Honor Watch ES Review: 1.64-Inch AMOLED, 95 Sports Modes
Verdict
Compared with the exquisite ceramic bezel of the first generation Amazfit GTR, the one-piece glass dial of Huami Amazfit GTR 2 is more modern. With a 1.39-inch AMOLED screen, the display effect is also outstanding. It can be matched with a different dial to show the difference. The same effect and outstanding appearance are definitely the highlight of Amazfit GTR 2. From a practical point of view, in addition to the standard features of wearable devices such as mobile payment, NFC cardholder, compass, and altimeter, Huami Amazfit GTR 2 also has some unique killers and highlights worthy of attention.
For example, the all-weather seamless voice control ability achieved by the combination of offline voice + Xiao Ai is one of the advantages of Amazfit GTR 2 that cannot be ignored. Not limited by the network, do not worry about the cumbersome manual operation and fingerprints dirty the dial, most operations can be completed in one sentence.
In addition, with the support of the microphone and speaker, Amazfit GTR 2 also supports music playback and Bluetooth call functions. Although it is a Lite OS-type light smartwatch, the user experience is no longer compared with those equipped with smart systems. Inferior. Amazfit GTR 2 has an absolute advantage in battery life. Daily use lasts for up to 14 days. Compared with those smartwatches that charge once every two or three days, it has a lot less power constraints.
The addition of blood oxygen detection function is the biggest surprise. From heart rate, sleep, PAI to today’s blood oxygen, we can have a deeper understanding of our own health. I also hope that more advanced algorithms can be launched in the future to accelerate the speed of blood oxygen detection, explore the possibility of combining blood oxygen data with other body data, and greatly expand the dimension of Huami Amazfit GTR 2 in the field of human health.
The secrets of appearance and function have been revealed one by one, the last suspense is undoubtedly the price, this time Huami Amazfit GTR 2 still brings a surprise to users. After a comprehensive upgrade from the outside to the inside, the price of Huami Amazfit GTR 2 is 999 yuan, which continues the excellent design and functions of Huami watches as always, and also has many new features led by the new blood oxygen sensor. Without increasing the price, Huami’s iconic extremely high cost performance.
If you were still hesitating about the high premium of smartwatches, then Huami Amazfit GTR 2 will undoubtedly make your heartbeat, with high appearance, practical functions, and high-cost performance, your road to smart wearable devices It is better to start with this Huami Amazfit GTR 2.