Compare Xiaomi Watch 2 vs Polar Pacer Pro

Onboard music storage was praised as ample for playlists, apps, and offline listening.

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

Recovery insights were criticized because suggested recovery times could be unrealistic enough that the reviewer learned to ignore them.

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

Activity auto-detection was criticized as trigger-happy and inconsistent about stopping activities.

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

Blood oxygen tracking received positive practical comments, including useful breathing-score context and close comparison to another oximeter-style device.

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

Bluetooth connectivity was praised in one review for staying reliable throughout testing.

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

Voice assistant quality was generally useful thanks to Google Assistant, though one reviewer noted recognition could be slow.

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

Contactless payments worked well and were convenient, but the required screen lock was an annoyance.

Contactless payments were treated as a missing smartwatch feature.

Calorie tracking usefulness was weak because Mi Fitness sometimes showed glitched calorie figures that did not match the watch.

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

Smartwatch features were considered strong for the price, with reviewers calling the watch packed or complete enough for everyday smartwatch tasks.

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

Third-party app support was a major advantage, with multiple reviewers praising access to Google Play apps and big-name services.

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.

Coaching was mixed: running and workout guidance existed, but sleep advice was described as generic.

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

Band quality was mixed to weak: the included TPU band suited workouts but felt cheap or awkward for everyday use.

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

Brightness was praised as sufficient, including in direct sun or sunny-day use.

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

Charging speed was consistently praised as fast, often offsetting some frustration with short battery life.

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

Heart-rate accuracy was split sharply: one tester saw close agreement with a Garmin reference, while others reported unreliable or inconsistent readings.

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.

Fitness tracking accuracy was mixed: basic tracking worked well for some reviewers, but others found workout data rudimentary or inconsistent in accuracy and usefulness.

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.

Water resistance was generally appreciated for swimming or showers, but one review noted the limitation of 5ATM with no IP rating.

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

Wellness insights were limited; reviewers wanted more proactive tracking and described some health presentation as bare-minimum.

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

Music controls worked, but the experience had a caveat because album art was missing in one reviewer’s test.

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

Durability had mixed evidence, with one reviewer feeling confident and another faulting the lack of military durability and sapphire glass.

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

Workout variety was viewed as broad, with 150+ or 160+ modes, though one reviewer cautioned that many modes can feel like simple exercise tags.

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.

Notification handling was polarized: several reviewers found replies and mirroring reliable, while one highlighted Wear OS notification delays.

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

Display quality was one of the strongest areas, with multiple reviewers praising the AMOLED panel, clarity, and screen appearance.

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

The user interface was easy to learn overall, but small-screen typing and interaction still required patience.

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

Button controls were generally usable and customizable, but reviewers missed the Pro model’s crown.

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.

Charging convenience was poor because reviewers disliked the proprietary or orientation-sensitive magnetic puck.

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

Mapping and navigation were mixed: one reviewer found directions unclear, while another showed GPS navigation working well.

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: one review praised the premium feel, while another called the materials cheaper than more expensive rivals.

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

Menu navigation was mostly intuitive, though the lack of a crown made swiping more necessary.

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

Step counting was included in a positive basic-tracking judgment from one reviewer who felt daily steps were handled well.

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.

Build quality ranged from superb or premium-feeling for the price to noticeably less premium than leading watches.

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

Software smoothness was mostly good, with reviewers calling it slick or fluid, though some still saw occasional sluggishness or stutter.

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

Style and design divided reviewers: some liked the minimalist look, while others found it plain or characterless.

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

Reliability was positive in Wareable’s Watch 2 review because earlier Xiaomi Wear OS bugs were not encountered.

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

Comfort was a consistent strength, with reviewers praising the light body for daily wear, workouts, and sleep.

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

Sleep tracking was generally one of the better health features, with several reviewers saying it was detailed or matched their experience, though one noted it was not perfectly precise.

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.

Companion app quality was split: some found Mi Fitness intuitive or fine, while Wareable called analysis a chore.

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

Reviewers treated general health data as useful directional guidance rather than professional-grade measurement; one review was positive about raw data while another warned not to treat it as hard fact.

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.

Operating system experience was mixed: Wear OS gave strong app access, but reviewers criticized the older Wear OS 3.5 base and uncertain update path.

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

The app ecosystem was a strength because Wear OS provided Google services, downloadable apps, and broad wrist-based functionality.

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

GPS accuracy was mostly praised for dual-band precision and strong real-world performance, with one reviewer finding it less exact.

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

Fit was acceptable but size-dependent; reviewers found it large or noticeable despite light weight.

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

Customization was a clear strength, including many watch faces, complications, straps, and Wear OS personalization options.

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

Battery life was the biggest split: one review praised two days, but several others found one-day endurance or daily charging disappointing.

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

Value for money was the strongest consensus point: reviewers repeatedly called it affordable, good value, or a bargain for Wear OS.

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.

Outdoor visibility was strong overall, with reviewers saying the display remained bright or visible outdoors.

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

ECG functionality was treated as a missing advanced feature, softened only by the watch’s lower price.

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

Body temperature tracking was a missing feature and was called a consideration for users who specifically want it.

Call handling was consistently positive, with reviewers saying watch calls sounded good or were easy to take from the wrist.

Cross-platform compatibility was a weakness because the watch is Android-focused and loses potential or support outside that ecosystem.

LTE connectivity was a repeated drawback because the standard Watch 2 lacks cellular support and pushes untethered users toward the Pro model.

Pairing and syncing were positive in the YouTube review that described automatic pairing and syncing with the Mi Fitness app.

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 a weakness because reviewers noted only one case size and concern for smaller wrists.

Touch responsiveness was mixed: one reviewer found typing acceptable, while another said responsiveness could be slow after startup.

Watch faces were praised for looking good on the AMOLED screen and offering customization.