Compare Garmin Forerunner 255S vs Polar Pacer Pro

Automatic hill detection through Hill Splitter received direct praise from one reviewer who said it worked perfectly.

The app ecosystem was mixed: Connect IQ adds watch faces and extras, but reviewers also described app support as limited compared with richer smartwatch stores.

The Polar ecosystem was praised strongly, especially Polar Flow, third-party fitness connections, and recovery/training analysis depth.

Band quality was positive overall, with reviewers calling the strap well-built, tough, and comfortable.

Band quality was praised for race-friendly ventilation and a strong buckle.

Battery life was widely praised, often landing around a week or more, but music, GPS, backlight, and long-term decline introduced caveats.

Battery life was one of the most common caveats, often landing around five days despite some positive week-long or GPS-use experiences.

Blood oxygen tracking was treated as a battery-heavy feature rather than a standout health tool, with one reviewer recommending disabling continuous monitoring if battery matters.

Blood oxygen tracking was treated as a notable missing health sensor rather than a working feature.

Bluetooth connectivity was positive when headphones paired easily in one review, but another reviewer found headphone pairing slow during music setup.

Bluetooth accessory compatibility drew criticism in one review after cycling power meters failed to pair reliably.

Brightness impressions varied widely: some found it bright enough in darkness, while others found it dim or less vivid than AMOLED-style watches.

Build quality received one clear positive judgment, with the bezel described as solid and made from fiber-reinforced polymer.

Build quality was generally positive for a slim sports watch, though one reviewer paired praise with typical Polar-specific caveats.

Button controls were mostly praised for workouts, water use, and avoiding accidental touches, though the button-only approach may not suit touchscreen-first users.

Button controls were mostly a strength because they were grippy, responsive, and useful during workouts, though a few reviewers needed adjustment or hit the wrong button.

Calorie and energy-source tracking was viewed as useful for training context, though one reviewer cautioned FuelWise output is still a guesstimate.

Charging convenience was a drawback because reviewers noted the lack of wireless charging and criticized the proprietary cable as dated.

Charging convenience was a recurring weakness because reviewers disliked the new magnetic connector or found it less secure.

Charging speed was mixed, with one reviewer praising fast charging and another calling charging slow.

Coaching tools and daily suggestions were widely liked, with reviewers describing them as personal-trainer-like, helpful for race prep, or a useful morning prompt.

Coaching features were one of the clearest strengths, with FitSpark, training plans, workout guidance, and training-load advice repeatedly praised.

Comfort was one of the strongest areas, with reviewers repeatedly praising the light, compact watch for day, workout, and sleep wear.

Comfort was one of the strongest points, with reviewers repeatedly praising its lightweight body, strap, and all-day or overnight wearability.

The companion app was mostly useful for setup, syncing, visualization, and customization, though some Garmin workflows still required extra learning.

Companion app quality was mixed: reviewers praised data depth and explanations but also called Polar Flow less intuitive or less polished than rivals.

Garmin Pay worked for reviewers, but it was described as less slick or less compelling than rival watch payment systems.

Contactless payments were treated as a missing smartwatch feature.

Cross-platform compatibility was positive in the evidence, with the Garmin Connect experience described as consistent across supported phone platforms.

Customization was a clear strength, from screen layouts and data fields to exercise settings and watch faces.

Customization options were a strength for sport profiles, data fields, workout screens, and zones.

Display quality was praised for clarity, compact usefulness, and always-on practicality, though reviewers acknowledged it lacks AMOLED polish.

Display quality was mixed-to-good, with improved readability and responsiveness offset by dullness, bezel size, and lack of OLED vibrancy.

Durability was generally positive, especially in long-term use, though one reviewer cautioned that ruggedness was hard to judge.

Durability was positively described through comfortable/durable design and expectations from its water resistance and military-standard testing.

ECG functionality was treated as a missing health feature compared with competing smartwatches.

Fit was especially strong for smaller wrists, with reviewers describing the watch as unobtrusive, well-sized, and easy to wear.

Fit was mixed: one reviewer had trouble with wrist fit, while others praised the snug or broadly wearable design.

Fitness tracking accuracy was a consistent strength, with reviewers praising run, workout, and training data as accurate and useful across several use cases.

Fitness tracking accuracy was generally positive for workout metrics, but the walking/VO2-style testing drew criticism from one reviewer and mixed scientific testing lowered confidence.

GPS accuracy was one of the strongest themes, with multi-band GNSS often praised as accurate or spot-on; one reviewer found it merely okay beside higher-end Garmin models.

GPS accuracy was mixed-to-positive: several reviewers found it fast, reliable, or excellent, while others saw wobble, offsets, or lower scientific GPS scores.

Reviewers split on broader health accuracy: ZDNet praised reliable all-day health and wellness data, while the scientific test review was much less impressed overall.

Reviewers generally found heart-rate tracking strong for a wrist device, with several comparisons to straps or other watches; caveats centered on optical sensors and fast HIIT-style changes.

Heart-rate results were mostly good for steady running and several reviewers saw close agreement with straps or other watches, but high-intensity sessions and cycling produced spikes, lag, or weaker results.

Navigation was useful but limited: reviewers liked turn-by-turn routes and back-to-start, while criticizing simple arrows, basic mapping, or clunky Komoot routing.

Materials quality was mixed: the bezel and strap were praised, but Gorilla Glass was called scratch-prone.

Materials quality was praised in relation to the Pro model's more premium aluminium bezel and buttons.

Menu navigation was polarizing, with one reviewer praising intuitive menus but several others calling Garmin navigation inconsistent, confusing, or daunting for newcomers.

Menu navigation was easy once the reviewer learned the physical buttons.

Music controls worked, but the lack of touch interaction made them feel less polished than they could be.

Music controls were generally useful for controlling phone audio, though reviewers repeatedly noted they are not a substitute for onboard music.

Onboard music storage split reviewers: some praised offline storage and streaming support, while another found setup slow and confusing enough to carry a phone instead.

Onboard music storage was consistently absent and criticized as a limitation for a sports watch.

Operating system experience received one positive long-term judgment, with the reviewer describing Garmin's familiar system as easy to use.

The operating system experience was functional but visually dated according to one reviewer.

Outdoor visibility was a major strength, with reviewers praising direct-sunlight readability and low glare from the memory-in-pixel display.

Outdoor visibility was generally strong, with reviewers repeatedly saying the screen was readable outdoors and in bright light.

Pairing reliability was mixed: watch setup and syncing were reliable in one review, while headphone pairing was criticized as time-consuming in another.

Recovery insights were valued when they simplified training decisions, but HRV status drew criticism for complexity or taking too long to appear.

Recovery insights were consistently praised for connecting sleep, readiness, training load, and daily recommendations into usable guidance.

Reliability was positive overall, with reviewers calling the watch dependable, practical, solid, or long-lasting in regular use.

Reliability was praised by one reviewer who found the data accurate through extended daily use.

Running power support was useful in concept but limited by the need for an external Garmin sensor.

Running power support was broadly positive because wrist-based power appears at this price, though one reviewer still preferred STRYD for accuracy.

Safety features were positively reflected in overreaching warnings that helped the reviewer avoid risky training load.

Score tracking was praised through ZDNet's frequent use of the Running Index report.

Size options were praised because the smaller S model makes serious Garmin training tools accessible to more wrist sizes.

Sleep tracking was useful and often close enough for general use, but reviewers noted it was less detailed or less sensitive than dedicated sleep-focused devices.

Sleep tracking was one of the stronger areas overall, with multiple reviewers praising Nightly Recharge or alignment with Oura and Whoop, though one scientific sleep-stage test rated it only mediocre.

Notifications worked well despite the compact display, and one reviewer showed texts arriving clearly with quick-response options.

Notification support was functional but uneven: some reviewers welcomed it, while others found it tucked away or forced into a dedicated menu.

Smartwatch features were considered useful but secondary; reviewers liked the basics while repeatedly framing the 255S as a training tool rather than a flashy smartwatch.

Smartwatch features were a repeated weakness; reviewers framed the Pacer Pro as a sports watch first, with limited apps, payments, assistants, and connected features.

Software smoothness was a weakness: reviewers noted slow Connect IQ downloads or the need to bounce between Garmin apps.

Software smoothness was usually praised after Polar's processor update, though one reviewer still noticed slowdown or lag in places.

Step counting received one clear positive judgment, with the reviewer finding it nearly spot-on against manual counting and other watches.

Step counting evidence was mixed, with Wareable seeing counts in line with Oura while the scientific test found undercounting and gave it a middle score.

Style and design were mostly practical rather than flashy: reviewers liked the tiny, capable form but did not call it a sleek fashion watch.

Style and design were mixed: reviewers liked the light, attractive, sporty build but also criticized the bland, basic, or less stylish appearance.

Third-party app support was useful mainly for fitness-related tools, but reviewers found it narrower than mainstream smartwatch app ecosystems.

Third-party support was split: there is no on-watch app store, but Polar Flow can sync with key fitness platforms such as Strava, TrainingPeaks, and Komoot.

The overall user interface was mixed: long-term Garmin users found the learning curve manageable, while other reviewers found the interface confusing.

The user interface was described as simple, intuitive, and uncluttered by reviewers who liked its directness.

Value for money was a major strength, with reviewers repeatedly calling the 255S a high-value training watch despite some cheaper rivals.

Value for money was one of the strongest themes: reviewers repeatedly said the watch brings higher-end Polar features to a much more attractive price.

Voice assistant capability was scored low because reviewers noted smart assistants were not included.

Watch face quality received one positive mention, mainly because the reviewer found many available faces for the 255S.

Water resistance was treated positively for swimming, rain, showering, and button use underwater.

Water resistance was positively viewed as suitable for swimming, showering, and bathing.

Wellness insights such as Morning Report and Body Battery were useful to reviewers, especially when they summarized recovery or daily readiness without becoming overwhelming.

Wellness insights were useful when tied to breathing, recovery, and training advice, but one reviewer felt negative sleep feedback could create stress.

Workout variety was praised as broader than a basic running watch, especially because swimming, cycling, multisport, triathlon, and extensive workout tools are supported.

Workout variety was a strength, with reviewers describing the Pacer Pro as a multisport watch with a broad activity library rather than only a running watch.