Thinking about buying the COROS PACE 4 Pro? Explore its premium materials, AMOLED screen, training features, and battery life before making your decision.
Table of Contents
In 2024, Coros struck a blow with its Pace Pro, a watch designed for road running but which offered particularly advanced functions such as the presence of an electrocardiogram or local mapping.
Since then, the sports watch brand has launched its Coros Pace 4, taking some of the new features of the Pace Pro. In the end, it didn’t take long for this model to be available in a “Pro” version. But for this Coros Pace 4 Pro, the brand has mainly focused on the hardware to make it a design and high-performance watch, without blowing up the bill. Here is his full review.
Technical sheet
| Model | Coros Pace 4 Pro |
|---|---|
| Dimensions | 47.6 mm x 47.6 mm x 11.8 mm |
| Screen resolution | 466 x 466 pixels |
| Slab | AMOLED |
| Internal memory | 32 GB |
| Weight | 38 g |
| Accelerometer and electronic compass | Yes |
| Sleep analysis | Yes |
| Ambient Light Sensor | Yes |
| Ingress protection | 5ATM |
Coros Pace 4 Pro A thin and light sports watch
Within the Coros sports watch range, the “Pace” models are distinguished by their thinness and lightness, which make them particularly suitable for road running. The Coros Pace 4 Pro is no exception.
For comparison, here are the dimensions and weight of the Pace 4 Pro compared to the first-generation Pace 4 and Pace Pro.
As you can see, the Pace 4 Pro is heavier than the other models, but this is mainly due to its larger size. Compared to watches from competing brands, the lightness of the watch is all the more noticeable:
| Spec | Coros Pace 4 Pro | Coros Pace 4 | Coros Pace 4 Aluminum | Coros Pace Pro |
|---|---|---|---|---|
| Dimensions (without sensor) | 47.6 x 47.6 x 11.8 mm | 43.4 x 43.4 x 11.8 mm | 43.4 x 43.4 x 11.8 mm | 46 x 46 x 12.25 mm |
| Weight without strap | 38 grams | 27 grams | 28 grams | 32 grams |
| Weight with nylon strap | 43 grams | 32 grams | 33 grams | 37 grams |
In concrete terms, for a watch of this size, the Coros Pace 4 Pro manages to remain particularly thin and, above all, very light on the wrist. This result is all the more surprising given that the manufacturer has once again decided to integrate solid materials, and not just plastic, into its watch. There is a titanium alloy bezel around the screen and a titanium crown.
For the screen too, Coros has chosen solidity by offering a 2.5D sapphire crystal protection. This ensures good protection against scratches, especially since this material is generally reserved for sports watches designed for the outdoors. To finish this tour of materials, it should be noted that, with the exception of the bezel and the crown, the rest of the case is made of plastic, which explains the lightness of the watch. The Coros Pace 4 Pro is also 5 ATM certified and can therefore be worn without fear in the rain or in the shower while washing dishes or even for surface swimming. However, it is not designed for diving.
From a purely aesthetic point of view, the Coros Pace 4 Pro is sober, with a screen that occupies a large area of the case, as we will see later. The watch also has three buttons: a crown and a back button on the left and an action button on the right. The action button is distinguished by a long orange line that brings a little cachet to an otherwise entirely black or white watch. Also worth mentioning is the speaker grille, placed between the lugs at the bottom of the watch, and the microphone, between the buttons on the right edge.
For the strap, Coros offers, as usual, the choice between a silicone or fabric strap, black or white. In my case, I was able to test the watch with a fabric strap so that I could adjust the watch to my wrist as well as possible. The only small regret is that I would have liked a slightly more elastic fabric to avoid micromovements during sports training. Nothing really annoying though; the Pace 4 Pro remains light and pleasant to wear and ends up being easily forgotten in use.
Of course, you can replace the Coros Pace 4 Pro's strap with any compatible strap. The watch uses a simple quick-release pin system with a pair of lugs on each side. You can therefore use a standard 22 mm wide strap if you want to further personalize the toquante.
A wide and very bright screen Coros Pace 4. Pro: A slim and light sports watch
Together with the design of the Pace 4 Pro, the display is undoubtedly one of the biggest innovations that Coros has brought to its new sports watch. We are entitled to a particularly large display thanks to a 1.47-inch-diameter panel, among the largest on the sports watch market, especially for a watch whose format remains measured, at 47.6 mm in diameter.
Above all, the screen occupies a large part of the surface of the watch, since the panel occupies 61.5% of the case. This is due in particular to the thin borders all around the display, whether it is the titanium bezel or the flange, and the black stripe between the bezel and the screen itself. For comparison, here are the diameters and case proportions of the screens of the main competing watches:
The result is a screen that is pleasant to read and, above all, has optimized space on the case. With the exception of the thin titanium bezel, the entire surface of the watch is used to display information that is useful for everyday life or training.
The Coros Pace 4 Pro gets a 466 x 466 pixel display, which is a density of 317 pixels per inch (ppi). This is a little below the 326 ppi now set as a reference by the Apple Watch with its "Retina" display, but it is still more than enough to comfortably consult the data without being able to perceive each pixel individually with the naked eye.
Above all, the Coros Pace 4 Pro has an Amoled display, as has been the case with all the watches in the manufacturer's "Pace" range since the Pace Pro. And here, Coros did not do things by halves. We are entitled to a particularly bright screen to compensate for potential reflections from the sky or the sun during training. The watch's panel can thus go up to a peak of 2500 cd/m² on a daily basis or up to 3500 cd/m² during training monitoring. This is more than most connected watches on the market. To give you an idea, the Garmin Fenix 9 Pro, the Samsung Galaxy Watch 9, the Google Pixel Watch 4, or the Apple Watch Ultra 4 all top out at 3000 cd/m². In other words, you have a particularly bright and comfortable screen here, both in everyday life and in training in the middle of a summer afternoon. Of course, the watch also has a brightness sensor to adjust the lighting of the panel to that of your environment.
| Watch | Screen diameter | Screen share on housing |
|---|---|---|
| Coros Pace 4 Pro | 1.47 inch | 61.5% |
| Coros Pace 4 | 1.2 inch | 49.3% |
| Coros Pace Pro | 1.3 inch | 51.5% |
| Garmin Forerunner 570 | 1.4 inch | 57.2% |
| Garmin Forerunner 970 | 1.4 inch | 57% |
| Garmin Fenix 9 47mm | 1.4 inch | 57.4% |
| Suunto Race 2 | 1.5 inch | 60.5% |
| Suunto Run 2 | 1.32 inch | 53% |
| Amazfit Cheetah 2 Pro | 1.32 inch | 49% |
| Huawei Watch GT Runner 2 | 1.32 inch | 59.4% |
You can also set up an "always-on" display mode on the Coros Pace 4 Pro, which can be activated in a differentiated way for everyday life or training. A very practical function to check the time without having to raise your wrist ostentatiously or to see your pace during a session without having to accentuate the movement of an arm lift.
The Coros Pace 4 Pro is natively equipped with a few dials that can be added to the default screen of your watch. In addition, the Coros application, on smartphones, offers many dials to download. Nevertheless, this is far from the customization offered on Garmin, Apple, or Samsung watches, for example. For example, it is not possible to change the colors or complications displayed on the dial. Too bad.
A smooth interface and a new built-in voice assistant
The Coros Pace 4 Pro is compatible with both Android and iPhone smartphones and simply requires you to install the Coros app on your phone.
In terms of navigation and interface, the controls are carried out using the touch screen as well as the three buttons, the rotating crown, the back button, and the action button:
- Swipe up/down or rotate the crown: Access the data timeline.
- Simply press the action/swipe right button from the dial: access to the control center.
- Long press the action button: voice assistant
- simple press on the crown: access to activities and applications
- Simply press the back/swipe right button in the menus to return to the previous screen.
- Long press the back button: access the toolbar.
The Pace 4 Pro also has 64 MB of RAM and 32 GB of storage, compared to 4 GB for the Coros Pace 4. This storage will be used for downloading local maps as well as for music. On the music side, the Pace 4 Pro is still limited to MP3 files stored on the watch but does not integrate music streaming services.
Coros also does not offer a third-party app store, as is the case with Garmin, Apple, or Google. Remember that the brand's watches are designed for sports use and that it will therefore not be possible to enjoy other applications directly from your wrist. Otherwise, you will be able to receive notifications from your smartphone as well as receive phone calls and answer them on your watch. On the other hand, while the Coros Pace 4 Pro allows you to answer a call, it does not offer the possibility of making one.
Still on the side of the Pace 4 Pro's additional features, let's mention silent alarms, countdown timers, weather access, media controls, and the function to ring your phone. The Coros Pace 4 Pro also has a flashlight function, but it is only a white screen light and not a real dedicated LED light as found on the Garmin Forerunner 970 or the Amazfit Cheetah 2 Pro. In the absence of an NFC chip and, incidentally, a partner service, the watch does not integrate a contactless payment function either.
Among the main new features of the Pace 4 Pro, however, is the arrival of a dedicated voice assistant. However, at the time of this test, it is only compatible in English, but not with French. Also, its functions are still limited and are limited to launching an app or function. For example, by saying, "What is the weather today?" the watch will simply open the weather app. However, it can be used to start a countdown, set alarms, or start a workout. Voice controls can also be launched, with the long press of the action button, during activities. You can then be warned, for example, if you exceed a certain heart rate while jogging. In concrete terms, this is a first step in the building, but we are still far from a voice assistant as relevant as Gemini on Wear OS watches or Zepp Flow on Amazfit watches.
Still, in terms of navigation, interface, and fluidity, the Coros Pace 4 Pro is a pleasant watch to use on a daily basis, without any slowdown and with intuitive controls once you understand how they work. We'll come back to this, but special mention for the Coros app and, above all, the Coros Training Hub web platform to find all your training data.
An exemplary sports follow-up
The Coros Pace 4 Pro is equipped with a complete arsenal of sensors for health monitoring and, above all, sports training. There is an optical heart rate sensor, a barometric altimeter, a GPS chip, an accelerometer, a gyroscope, a compass, a temperature sensor, a pulse oximeter, and even an electrocardiogram.
The accuracy of the Coros Pace 4 Pro's GPS
Like all Coros watches, the Pace 4 Pro is compatible with several satellite positioning constellations: GPS, Galileo, Glonass, Beidou, and QZSS. It also benefits from dual-frequency GPS compatibility (L1+L5), allowing, in theory, more reliable position tracking in complex environments such as in the city, in the mountains, or in the forest.
To evaluate the GPS accuracy of the Coros Pace 4 Pro, I wore it on my wrist during several running sessions in a variety of environments, whether in the city or in a park or on the track.
Overall, the Coros Pace 4 Pro has particularly accurate GPS tracking, with an order of magnitude similar to that of the Garmin Fenix 8. Admittedly, it has a little more trouble in small alleys in the city, but that's the lot of all sports watches. It will nevertheless manage to offer you a faithful follow-up of the distance covered and, consequently, the pace during your sessions.
The Coros Pace 4 Pro, like all of the brand's recent watches, also benefits from offline mapping. It must be said that even the Coros Pace 4, which was without it at launch, has been updated to integrate this function in turn. It will also be possible to plan a route, return to the starting point, or add pins to your route to remember a point of interest.
As always with the manufacturer, I particularly appreciated the fluidity of the map display, light years away from the competition from Garmin, for example. However, unlike its American competitor, Coros does not allow you to reprogram a route on the fly if you don't have your phone with you. Finally, it will be a detail for some, but we can also regret that the mapping of the watch, accessible in activity from the action button, is necessarily on a dark background, without a light theme proposed.
The heart rate accuracy of the Coros Pace 4 Pro
The Coros Pace 4 Pro naturally has an optical heart rate sensor on the back of the case. This is an optical heart rate sensor with a layout that has never been seen before from the manufacturer.
| HR Measurement | Heart rate belt | Coros Pace 4 Pro | Average Deviation | Deviation after 10 min |
|---|---|---|---|---|
| Average HR | 143 bpm | 143 bpm | 0.00% | +0.14% |
| Max HR | 151 bpm | 151 bpm | — | — |
Concretely, to evaluate the accuracy of the heart rate measurement on the Pace 4 Pro, I wore it during several running sessions at various paces and intensities. First on a jogging outing at a constant intensity, then on a long outing with two tempo-pace blocks, on a session with two big boulders at a 10 km pace, and finally, on an interval outing with fast intervals longer and longer, then shorter and shorter.
I then compared the curves and measurements to those of a heart rate belt used here as a reference, the Garmin HRM 600, which is based on the electrical activity of the heart during exercise.
It should be noted, however, that measuring heart rate on the wrist, via an optical sensor, can be more capricious under certain conditions. Thinner wrists, tattoos, or cold weather can reduce the reliability of measurements. Fortunately, the Coros Pace 4 Pro will be able to easily connect to more reliable external heart rate sensors, such as a heart rate monitor belt or a heart rate armband, such as the Coros HRM.
The sports and health functions of the Coros Pace 4 Pro
On a daily basis, for health monitoring, the Coros Pace 4 Pro is equipped with everything you would expect from a connected watch. As we have seen, it benefits from an optical heart rate sensor but also a blood oxygen sensor (used in particular for altitude adaptation), sleep and stress monitoring for recovery, and even an electrocardiogram. Be careful; however, this ECG cannot detect atrial fibrillation and is not medically certified. It will be especially useful in the context of the "health check" function to reliably and accurately analyze the resting heart rate and the HRV when waking up.
Finally, the watch also benefits from a temperature sensor used to measure the ambient temperature, provided that the watch is removed for at least ten minutes but not the body temperature during exercise.
It's really on tracking, data, and sports trends that the Coros Pace 4 Pro shines. While it doesn't add anything new compared to the brand's other watches, we can only salute the richness of the data and the practicality of the Coros interface and, above all, its Coros Training Hub web portal. It's quite simple; for the past six months, I've even gotten into the habit of exporting all the sessions recorded on my Garmin watch to the Coros platform in order to use them more easily.
You will be able to find many graphs to see the evolution of the threshold, the MAS, the training load, and the level of running or the physical condition.
In addition, Coros is compatible with a wide range of training apps such as Strava, Training Peaks, Relive, Apple Health, and Google Health.
Finally, the Coros Pace 4 Pro natively benefits from the latest features launched by the manufacturer. This is the case, for example, of the MCP to query Claude or ChatGPT on the basis of the data integrated into his Coros account. This is also the case with the Live Tracking tool, available since this summer, which allows you to share a link with your friends and family so that they know where you are at any time during your training (for safety) or on the day of a race (to encourage you).
Extremely comfortable autonomy
The Coros Pace 4 Pro has a 447 mAh battery with a battery life announced by the manufacturer as 50% longer than that of the Pace 4.
In concrete terms, according to Coros, the Pace 4 Pro can last up to 21 days of battery life in smartwatch mode or seven days with an always-on display. For activity tracking, the brand announces 40 hours with the "Max GPS" mode, the most accurate, or 60 hours with the "High GPS" mode, the most economical.
For my part, I tested the watch with the usual settings, namely by activating the always-on display during the day, from 9 a.m. to 11 p.m., by opting for the "Max GPS" tracking, with the brightness in "high" mode, at 2/3, and with the heart rate tracking set in real time.
With these settings, which are energy-consuming to say the least, the Coros Pace 4 Pro has shown a particularly comfortable battery life. After just nine days of use, it still had 20% battery. Above all, over these nine days, I didn't skimp on use, with five running sessions for a total of 5 hours and 45 minutes of the most efficient GPS tracking.
For charging your watch, Coros does not provide a specific cable, but, as usual, a small and very practical adapter with its keyring storage. Simply plug it into the back of the watch and connect a USB-C cable. To recharge, it takes about an hour and a half to go from 0 to 100% battery.
Call and communication
The Coros Pace 4 Pro comes with Bluetooth connectivity. Of course, this will be used to connect the watch to your smartphone or headphones, but not only. You can also use the Bluetooth connection to answer phone calls from your watch, as long as you are within range of the connected smartphone. On the other hand, as we saw earlier, the Coros Pace 4 Pro does not allow you to make calls from the watch, but only to answer them.
In addition, the Bluetooth connection also allows third-party sensors to be connected to the Pace 4 Pro, whether it's an external heart rate sensor, a power meter for cycling, or a home trainer.
The Coros Pace 4 Pro is also Wi-Fi compatible, especially for downloading updates or mapping. On the other hand, it does not have an NFC chip and therefore cannot be used for contactless payment.
Finally, as we have seen, the Coros watch is compatible with the GPS, Galileo, Glonass, Beidou, and QZSS satellite constellations and supports dual-frequency positioning.
- Ultralight & Ultra-Thin Design: Weighing only 32g with the nylon band and just 11.8mm thin, COROS PACE 4 GPS watch is li...
- EASY ON THE EYES: The 1.2"touchscreen AMOLED display keeps colors vibrant and lines sharp, with auto-adjusting brightnes...
- BIG BATTERY LIFE: Train longer without interruption. With 41 hours of continuous GPS use and up to 19 days of daily batt...
Price and release date
The Coros Pace 4 Pro has been available in France since September 22. The watch is available in a single 47 mm size but in two colors: black or white.
It is priced at $249 with several strap configurations: black silicone, white silicone, black nylon, or white nylon. Note, however, that the model with a white nylon strap will arrive later, at the end of October 2026.
