Compare Garmin Forerunner 255S vs Amazfit Active 3 Premium

Workout auto-detection is mixed: some sources say it auto-recognizes strength movements and several sports, while one hands-on review says it lacks automatic workout detection.

Connect IQ adds watch faces, data fields and apps, but reviewers describe the ecosystem as useful rather than Apple-level and sometimes limited.

The app ecosystem is useful but bounded: reviewers mention hundreds of apps and Zepp App Store extras, while one notes apps must come from Zepp rather than Apple or Google stores.

Reviewers consistently liked the silicone strap, calling it comfortable, adjustable, exercise-ready and tough enough for regular training use.

Band impressions are generally practical, with standard 20 mm quick-release or non-proprietary bands and an included silicone strap.

Battery life is a major strength, commonly landing around a week or more, though music, GPS and oxygen monitoring can reduce it.

Battery life is one of the strongest themes, with typical use ranging from about 8-12 days in hands-on reviews and up to 24 hours in GPS mode in launch coverage.

Blood oxygen tracking is present for sleep or daytime monitoring, but reviews treat it as one metric among many rather than a standout feature.

Blood oxygen tracking is repeatedly listed among the health features and background sensor options.

Bluetooth headphone pairing is generally workable and music-friendly, though one long-term user found headphone pairing slow and frustrating.

Bluetooth is central to calls, pairing, notifications, peripherals, and map transfer, though reviewers note phone proximity and Bluetooth-only transfer limitations.

Brightness control is handled through physical buttons and fits the watch’s practical, low-key outdoor design.

Brightness is widely praised, especially the 3,000-nit screen and outdoor readability.

Build quality is generally solid for a lightweight polymer watch, with durable long-term impressions but some concern about scratch-prone Gorilla Glass.

Build quality is consistently described as premium for the price, helped by stainless steel, sapphire glass, and four-button construction.

The five-button layout is repeatedly praised for workouts, water use and avoiding accidental touches, even if it requires adjustment.

Button controls are a clear strength, with four physical buttons praised for workouts, gloves, sweaty hands, and navigation without touch input.

Call handling is basic: Android users can respond or reject calls through the watch, but it still relies heavily on the paired phone.

Call handling is mostly supported through Bluetooth calling and a mic/speaker, though one preview transcript reports a no-speaker limitation.

Calorie tracking is mentioned as part of the app ecosystem, but reviewer evidence does not deeply evaluate its accuracy or usefulness.

Charging is functional but not premium; Garmin’s common cable is convenient for Garmin owners, while the proprietary setup feels dated to one reviewer.

Charging convenience is helped by long battery life and a familiar Amazfit magnetic charger used across several models.

Coaching features are a clear strength, with Garmin Coach, suggested workouts, race tools and personal-trainer-like prompts repeatedly highlighted.

Coaching features are a major strength, including Zepp Coach, adaptive plans, training libraries, guided metrics, and beginner-friendly structure.

Comfort is one of the strongest points, especially for sleep and long workouts, because the smaller case feels light and unobtrusive.

Comfort is consistently positive, with reviewers calling out the light feel, smaller size, and approachable wearability.

Garmin Connect is useful and reliable for setup, syncing, visualization and customization, though music setup and app separation can confuse newcomers.

The Zepp companion app is mostly praised as clear, detailed, easy to set up, and useful, though one German review criticizes weak translations.

Garmin Pay and NFC are supported and useful, but reviewers note Garmin’s payment system lacks the polish or bank support of rivals.

Contactless payments are supported through NFC/Zepp Pay/Curve in supported regions, but availability is country- and bank-dependent.

The watch works across Android and iOS, with a consistent Garmin Connect experience, though Android gets better message response support.

Cross-platform behavior is mixed: it works with iPhone and Android, but reviewers note less seamless iPhone integration and Android-only response features.

Customization is strong, covering workout data screens, watch faces, colors, app settings and per-activity tracking options.

Customization is strong for training screens, metrics, shortcut buttons, replies, and watch/app settings.

The MIP display is practical and readable rather than flashy, with reviewers trading away AMOLED vibrancy for battery life and outdoor usability.

Display quality is a standout, with reviewers praising the AMOLED panel, clarity, color, and premium look, despite one smudging complaint.

Durability looks good in longer-term use, with reviewers reporting little wear, though the bezel and glass can still be scratch concerns.

Durability is supported by sapphire glass, scratch resistance, 5 ATM water resistance, and a sturdier build than expected for the price.

ECG functionality is absent according to the review evidence.

Fit is excellent for smaller wrists, with the 41mm case repeatedly described as comfortable and well-sized.

Fit is generally positive thanks to the light weight, comfortable sizing, and adjustable lugs, though it comes in one case size.

Fitness tracking is broadly accurate and analysis-rich, especially for endurance training, with some caveats around live heart-rate smoothing.

Fitness tracking is generally strong for running metrics and training data, but reviewers note some accuracy caveats for heart rate and GPS in harder conditions.

GPS accuracy is a major strength thanks to multiband GNSS, though a few reviewers saw small variations or altitude inaccuracies in specific scenarios.

GPS and navigation are strong for the price, with offline maps and route features, but single-band GPS can drift or struggle in dense woods or obstructed areas.

Health tracking is useful but training-oriented; reviewers appreciated HRV and recovery metrics while noting it is not a full health wearable.

Health tracking is broad and mostly praised, covering HRV, heart rate, blood oxygen, stress, sleep, and BioCharge-type readiness insights.

Heart-rate accuracy is generally strong for a wrist watch, often close to straps, but reviewers still recommend straps for the sharpest live accuracy.

Heart-rate accuracy is mixed: some tests report good chest-strap agreement, while others saw cadence-like behavior or imperfect interval tracking.

LTE connectivity is not available, so connected features depend on a nearby phone over Bluetooth.

Materials are typical Garmin Forerunner fare: lightweight polymer, Gorilla Glass and silicone, chosen more for sport practicality than luxury.

Materials quality is a strength, with stainless steel, sapphire glass, and metal accents repeatedly mentioned.

Menu navigation is the clearest weakness, with several reviewers calling it complex or confusing despite button-control advantages.

Menu navigation is mostly smooth and button-aided, though some workout and map workflows confused reviewers or required leaving an activity.

Music controls are present for phone audio, and the watch exposes quick music controls from the button interface.

Music controls and audio functions are present through phone control, playback widgets, podcasts, and music/podcast storage.

Onboard music is a useful feature with storage for offline audio, but setup and loading can be slow or confusing for some users.

Onboard storage is useful for maps, music, podcasts, and routes, but space is limited compared with higher-end Amazfit models.

The operating system is familiar and capable, with one reviewer praising its ease while others note Garmin’s learning curve.

The Zepp OS experience is familiar and smooth, with reviewers describing it as similar to other Amazfit watches.

Outdoor visibility is excellent because the MIP display remains readable in sunlight with very little glare.

Outdoor visibility is a major strength, supported by the bright 3,000-nit AMOLED display and direct-sun readability.

Pairing and acquisition are mostly reliable, especially GPS and Bluetooth headphones, but headphone pairing frustrated one user.

Pairing is generally easy, but one iPhone user noticed occasional brief syncing delays.

Recovery insights are a strong training feature, including HRV, Body Battery, Training Load and Morning Report-style readiness context.

Recovery insights are a major part of the product, including recovery time, fatigue, exertion, HRV, sleep quality, and BioCharge/readiness-style data.

Reliability is supported by long-term updates and GPS stability, with Garmin’s longevity praised in follow-up use.

Overall reliability is positive in hands-on use, though early heart-rate and map-transfer quirks keep it from being flawless.

Safety features exist through optional Garmin tools such as LiveTrack, though the reviews provide limited evaluation beyond availability.

Safety and navigation features are strong for the price, including offline maps, turn-by-turn guidance, rerouting, POIs, and backtrack-style return options.

Size options are a standout benefit because the 255S gives smaller wrists a serious multisport watch without losing core training tools.

Size options are limited because the watch comes in one case size, although reviewers also liked the smaller, more manageable form factor.

Sleep tracking is viewed as useful and reasonably aligned with other devices, though not as deep as dedicated sleep-focused wearables.

Sleep tracking is one of the best-reviewed attributes, with detailed stages, wakeups, HRV, breathing data, and sleep scores.

Smartphone notifications work well for basic alerts and quick replies, especially on Android, but remain constrained by the small non-touch screen.

Smartphone notifications are supported, including calls, SMS, app alerts, WhatsApp, and notification viewing, with richer replies on Android.

Smartwatch features are useful but intentionally basic, prioritizing training over app-rich Apple, Google or Samsung-style smartwatch polish.

Smartwatch features are broad for the price, including calls, notifications, stand reminders, Find My Phone, camera control, speaker/mic, and app extras.

Software smoothness is praised, with reviewers noting little lag, no stutters, and smooth operation.

Step counting appears accurate in the reviewer evidence, including a near-spot-on manual step check.

Stress tracking is available as part of the broader health suite, with reviewers presenting it as a daily wellness metric.

Stress tracking is repeatedly included among the automatic health features and wellness insights.

Style is utilitarian rather than flashy, but reviewers consider it acceptable for everyday wear if you choose muted colors.

Style and design are mostly positive for a premium-looking budget watch, but some reviewers wanted more color and strap choices.

Third-party app support exists through Connect IQ, Strava, Komoot and music apps, but reviewers describe it as limited versus mainstream smartwatches.

Third-party support is mixed: key training platforms like Strava, TrainingPeaks, Runna, and Intervals appear, but broader app-store access and some training-app links are limited.

Touchscreen responsiveness scores poorly because the watch has no touchscreen; reviewers mostly frame that as a deliberate sport-watch tradeoff.

Touchscreen use is functional, but reviewers emphasized the value of physical buttons and did not deeply praise touch responsiveness itself.

The interface is powerful but polarizing: some find it easy once learned, while newcomers can find it dense or confusing.

The interface is generally beginner-friendly, smooth, and jargon-free.

Value is strong for runners and multisport users, especially given multiband GPS, battery life and training depth at a midrange price.

Value for money is the strongest consensus point, with reviewers repeatedly contrasting the price with the premium build, maps, battery, and health features.

Voice assistant support is present through Zepp Flow/AI assistant controls and commands, with generally positive but not deeply tested impressions.

Watch face support is good through built-in faces and Connect IQ, with reviewers noting customization and many free options.

Watch face quality is mixed: there are Zepp App Store watch faces, but one reviewer questioned whether some looked AI-generated.

Water resistance is strong for swimming, rain and shower use, and physical buttons are an advantage around water.

Water resistance is solid for everyday use and swimming, with multiple reviews mentioning 5 ATM protection.

Wellness insights such as Morning Report, Body Battery and general wellbeing metrics are useful companions to the training focus.

Wellness insights are broad and digestible, with BioCharge, HRV, sleep, respiratory data, readiness, fatigue, and recovery-style feedback.

Wi-Fi connectivity appears weak or absent for map transfer; one reviewer specifically says map transfer is Bluetooth-only rather than Wi-Fi.

Workout variety is extensive, spanning running, cycling, swimming, hiking, yoga, triathlon and dozens of app-manageable workout types.

Workout tracking variety is strong, with more than 170 sport modes and detailed running, hybrid, strength, treadmill, and swimming profiles.