Coros Pace 4 Pro Review: Giant Display, Premium Build and Staggering Battery Life

In 2024 Coros turned heads with the Pace Pro, a road-running watch that stood out by offering advanced features such as an electrocardiogram and onboard maps.

Since then the brand released the Coros Pace 4, which borrowed several improvements from the Pace Pro. It didn’t take long before Coros introduced a “Pro” variant of that model. With the Pace 4 Pro the company focused primarily on materials and build quality to deliver a stylish, capable watch without sending the price skyward. Below is our complete hands-on evaluation.

Coros Pace 4 ProTechnical specifications

The unit used for this review was provided by the manufacturer.

Coros Pace 4 ProA slim, lightweight sports watch

Within Coros’s lineup, the “Pace” series is known for thin, light watches optimized for road running. The Pace 4 Pro continues in that tradition.

To give a quick comparison, here are the measurements and weights of the Pace 4 Pro alongside the Pace 4 and the first-generation Pace Pro.

As you can see, the Pace 4 Pro is heavier than the smaller models, mainly because it has a larger case. When compared to rival watches, however, its lightness becomes apparent:

In practice, for a watch of this size the Pace 4 Pro manages to remain notably thin and, above all, easy on the wrist. That’s impressive considering Coros chose to include higher-end materials rather than only plastics. The watch features a titanium alloy bezel and a titanium crown.

Coros also opted for durability on the screen by fitting 2.5D sapphire glass, which offers strong scratch resistance—typically a material reserved for outdoor-focused sport watches. Aside from the bezel and crown, the case is mostly plastic, which helps keep the overall weight down. The Pace 4 Pro is rated 5 ATM, so it can be worn in the rain, during showers, dishwashing or surface swimming, but it isn’t designed for diving.

Visually the watch leans toward minimalism: the display fills much of the case, as we’ll discuss in the next section. The controls include three buttons—a rotating crown and a back button on the left, and an action button on the right. The action button is highlighted by a long orange stripe adding a touch of character to models that are otherwise available in plain black or white. You’ll also find a speaker grille between the lower lugs and a microphone on the right edge between the buttons.

For straps, Coros keeps to its usual options: silicone or fabric, in black or white. I tested the watch with the fabric strap to get a better fit. My only minor gripe was that the textile could have been a touch stretchier to reduce tiny movements during workouts. However, the watch is so light that it remains comfortable and tends to be forgotten after you’ve worn it for a while.

Of course you can swap the Pace 4 Pro’s strap for any compatible band. It uses a standard quick-release pin system with lugs on each side, so you can fit a 22 mm strap if you want to personalize the look further.

Coros Pace 4 ProA large, extremely bright display

The screen is one of the most notable upgrades on the Pace 4 Pro. It uses a generously sized 1.47-inch panel—one of the largest available on sport watches—while the case diameter remains a relatively restrained 47.6 mm.

Crucially, the display occupies a substantial portion of the watch’s face: the panel covers 61.5% of the case area. That’s achieved thanks to narrow bezels and a slim rehaut, the black ring between the bezel and the glass. For comparison, here are screen sizes and screen-to-case ratios for a selection of competitors:

The result is a very readable display and an efficient use of the case surface; aside from the thin titanium bezel, most of the front is reserved for showing useful data whether you’re off the beaten track or just checking your stats at home.

The panel runs at 466 x 466 pixels, giving a pixel density of about 317 PPI. That’s slightly below the 326 PPI often cited as the “Retina” benchmark, but plenty sharp for everyday use—the pixels are not noticeable in normal viewing.

Importantly, the Pace 4 Pro uses an AMOLED screen, as do Coros’s recent Pace-branded watches. Coros went big on brightness: the display can reach up to 2,500 cd/m² in regular use and up to 3,500 cd/m² during workouts—figures that outpace many smartwatches on the market. For context, devices such as the Garmin Fenix 9 Pro, Samsung Galaxy Watch 9, Google Pixel Watch 4 and Apple Watch Ultra 4 top out around 3,000 cd/m². In short, this is an especially bright and comfortable screen for sunny training sessions. An ambient light sensor automatically adjusts brightness to match conditions.

You can also enable an always-on display mode on the Pace 4 Pro, with separate settings for daily wear and for workouts. This is useful if you want to glance at your pace or the time without exaggerating an arm raise during a run.

The watch comes with several built-in watch faces, and the Coros mobile app offers additional faces to download. Customization, however, is more limited than on some rivals—Garmin, Apple and Samsung allow deeper modification of colors and complications, which isn’t possible here.

Coros Pace 4 ProSmooth interface and a new built-in voice assistant

The Pace 4 Pro works with both Android phones and iPhones using the Coros app installed on your smartphone.

Navigation is handled via the touchscreen and three physical controls—the rotating crown, the back button and the action key. Controls are mapped as follows:

• swipe up/down or rotate the crown: access the data carousel;
• single press of the action button or swipe right from the watch face: open the control center;
• long press on the action button: invoke the voice assistant;
• single press of the crown: open activities and apps;
• single press of the back button or swipe left in menus: return to the previous screen;
• long press of the back button: open the quick tools bar.

Inside the watch you’ll find 64 MB of RAM and 32 GB of storage—significantly more onboard memory than the Pace 4, which has 4 GB. That storage can host offline maps and music files. On the music side, the Pace 4 Pro currently supports locally stored MP3s but does not integrate music streaming services.

Coros does not operate an app store for third-party apps like Garmin, Apple or Google do. The brand’s focus remains squarely on sport, so you won’t run arbitrary apps directly on the watch. You can, however, receive smartphone notifications and accept incoming calls on the watch. Note that while you can answer an incoming call, the Pace 4 Pro cannot originate calls itself.

Other convenience features include silent alarms, a countdown timer, weather information, media controls, and a “find my phone” function. The watch also offers a flashlight function, but this is implemented by lighting the screen bright white rather than using a dedicated LED as seen on some competitors like the Garmin Forerunner 970 or the Amazfit Cheetah 2 Pro. There’s no NFC chip and no partner payment service, so contactless payments aren’t available.

Among the Pace 4 Pro’s headline additions is an integrated voice assistant. At the time of testing it only understands English and its capabilities are modest: voice commands can open apps or trigger simple actions. For example, saying “What is the weather today” simply launches the weather app. The assistant can set timers, alarms or start workouts, and you can activate voice controls during activities with a long press of the action button—for instance to warn you when you exceed a certain heart rate while running. It’s a useful early step, but not yet as powerful as assistants such as Gemini on Wear OS devices or Zepp Flow on some Amazfit watches.

Overall the interface is smooth and responsive: menus and screens run without lag, and controls feel intuitive once you learn them. The Coros app and especially the Coros Training Hub web platform are particular highlights for managing and exploring training data.

Coros Pace 4 ProOutstanding sports tracking

The Pace 4 Pro ships with a full complement of sensors for health and sport tracking: an optical heart-rate sensor, barometric altimeter, GPS chipset, accelerometer, gyroscope, compass, temperature sensor, pulse oximeter and even an electrocardiogram.

GPS accuracy on the Coros Pace 4 Pro

Like other Coros watches, the Pace 4 Pro supports multiple satellite constellations: GPS, Galileo, GLONASS, BeiDou and QZSS. It also offers dual-frequency GNSS (L1+L5) which should, in theory, improve positional accuracy in challenging environments such as urban canyons, mountains or dense forests.

To test GPS accuracy I wore the Pace 4 Pro on numerous runs across different settings—city streets, park trails and track sessions.

I compared distances and GPS traces to those recorded by a high-end Garmin, the Fenix 8. For reference, the Coros was worn on my left wrist and the Garmin on my right.

For these outings I used the most accurate GNSS mode (“Max GPS”) with dual-frequency tracking and selected the default running profile rather than a track-specific mode. The difference in wrist placement and mode explains the larger discrepancy on the track run, which mainly tests lane positioning.

Overall, the Pace 4 Pro delivers very accurate GPS tracking, with results comparable to the Garmin Fenix 8. It struggles slightly more in narrow alleys or heavily built-up streets—an issue common to many sport watches—but it will give you reliable distance and pace data for training.

The Pace 4 Pro also includes offline mapping. Even the original Pace 4 received a later update to add maps. You can upload routes, follow a breadcrumb to return to your starting point, or drop pins to save points of interest.

I particularly appreciated how smoothly the maps render on the Coros interface—far ahead of certain competitors. Unlike some rivals, though, Coros doesn’t allow re-routing on the watch itself if you don’t have your phone. Also, map views are only shown with a dark theme when launched from activity mode; there’s no light-theme option at present.

Heart rate accuracy on the Coros Pace 4 Pro

The Pace 4 Pro uses an updated optical heart-rate sensor on the caseback. To assess its accuracy I wore the watch during several runs covering steady jogs, long efforts with tempo blocks, sessions with two hard 10K-paced intervals and interval workouts with progressively longer then shorter repeats.

I compared the watch’s HR graphs with readings from a chest strap—here the Garmin HRM 600—which uses electrical signals from the heart and serves as the reference.

Across the four sessions the Pace 4 Pro delivered excellent heart-rate tracking regardless of intensity or pace changes. In short, the watch provides top-tier wrist-based HR performance.

That said, wrist-based optical HR can be less reliable in some circumstances—very slim wrists, tattoos or cold conditions can degrade readings. Fortunately, the watch pairs easily with external heart-rate sensors, such as chest straps or arm bands (including Coros’s own HRM), when you want the most accurate data.

Sports and health features on the Coros Pace 4 Pro

For daily health tracking the Pace 4 Pro includes everything you’d expect: optical heart rate, SpO2 monitoring (useful for altitude adaptation), sleep and stress tracking for recovery insights, and even an ECG. Note that the ECG isn’t intended as a medical diagnostic tool and cannot officially detect atrial fibrillation; it’s primarily useful within Coros’s “health check” feature to analyze resting heart rate and heart-rate variability on wake-up.

The temperature sensor measures ambient temperature when the watch has been off the wrist for at least ten minutes; it does not provide core body temperature during exercise.

Where the Pace 4 Pro really excels is in its sports data, trends and analysis. Coros’s interface and, in particular, the Coros Training Hub web portal offer rich visualizations and an intuitive way to review training load, threshold, VO2 estimates, running form and fitness progression. Personally, I’ve even exported training files from my Garmin to Coros over the past six months because I find the analytics easier to navigate on Coros’s platform.

The platform provides numerous graphs for tracking changes in threshold pace, VMA, training load, running level and overall fitness.

Coros also supports many popular training services, including Strava, TrainingPeaks, Relive, Apple Health and Google Health.

Finally, the Pace 4 Pro includes the newest Coros features such as MCP, which allows queries to Claude or ChatGPT based on your Coros account data, and Live Tracking—introduced this summer—which lets you share a link so family or friends can follow your real-time location during workouts or races for safety and encouragement.

Coros Pace 4 ProVery comfortable battery life

The Pace 4 Pro is powered by a 447 mAh battery and Coros claims up to 50% longer runtime than the Pace 4.

According to Coros, the watch can last up to 21 days in smartwatch mode or seven days with the always-on display enabled. For activity tracking, they state up to 40 hours with “Max GPS” (the highest-precision mode) and 60 hours in the more conservative “High GPS” mode.

In my testing I used fairly demanding settings: always-on enabled daily from 9:00 to 23:00, Max GPS for runs, brightness set to a high level (about two-thirds), and continuous heart-rate monitoring in real time.

Even with those energy-intensive settings the Pace 4 Pro delivered very solid battery life. After nine days of regular use it still showed 20% battery remaining. During that period I recorded five runs totaling 5 hours 45 minutes of GPS tracking in the most accurate mode.

Coros includes a small magnetic charging adapter—conveniently sized and with a keychain-style storage—into which you plug a USB-C cable. Charging from empty to full takes roughly an hour and a half.

Coros Pace 4 ProCalls and connectivity

The Pace 4 Pro uses Bluetooth to pair with your phone and wireless headphones, and it can handle incoming calls while you’re within Bluetooth range of the connected smartphone. As noted earlier, it can answer calls but cannot initiate them from the watch.

Bluetooth also enables pairing with external sensors—heart-rate straps, power meters for cycling or smart trainers.

Wi‑Fi is supported for downloading updates and maps. There is no NFC chip, so contactless payments are not available.

Finally, as mentioned, the watch supports GPS, Galileo, GLONASS, BeiDou and QZSS and can use dual-frequency positioning for improved accuracy.

Coros Pace 4 ProPrice and release date

The Coros Pace 4 Pro has been available in France since September 22. It’s offered in a single 47 mm size and two colorways: black or white.

The retail price is €449 and you can choose between silicone (black or white) or nylon (black or white) straps. Note that the white nylon version was scheduled to ship at a later date, at the end of October 2026.

At €449 the Pace 4 Pro costs €180 more than the Pace 4 (priced at €269) and about €50 more than the original Pace Pro at its launch. It is, however, €100 cheaper than the Garmin Forerunner 570 (listed at €549.99), which does not include onboard mapping.