Compare Samsung Galaxy Watch Ultra (2025) vs Amazfit Active 3 Premium

Workout auto-detection is broadly useful, with reviewers citing automatic workout detection and reliable walk detection, though manual starts remain better for some activities.

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.

The app ecosystem is a strength: reviewers mention many available apps, Google Play access, and expanded usefulness from the extra storage.

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.

Band feedback is mostly positive for comfort, stability, and easy removal, though one reviewer noted dirt collecting in the strap holes.

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

Battery life is one of the clearest strengths, often described as the best in Samsung’s lineup, though heavy GPS or always-on use 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 across the health sensor set, but one long-term reviewer found SpO2 readings routinely low.

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

Bluetooth support is present, including Bluetooth 5.3 mentions, but external sensor connections were criticized or described as unavailable.

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

Brightness earns strong praise, with reviewers citing high nits, bright AMOLED output, and easy readability.

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

Build quality is consistently praised through the rugged titanium case, durable chassis, and robust construction.

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

Button controls are mixed: reviewers like the Quick/action button and programmable shortcuts, but one long-term reviewer disliked accidental presses and limited workout button behavior.

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

Call handling is supported through Bluetooth calling, speaker/mic use, and smartwatch features for calls and texts.

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

Calorie tracking is included as part of the activity metrics, but the evidence is limited to feature availability rather than deep accuracy testing.

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

Charging is wireless and reasonably convenient, but one reviewer criticized the missing wall charging block.

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

Charging speed gets limited but positive evidence, with one review reporting a full charge in about 95 minutes.

Coaching features are a real addition, especially Running Coach, with reviewers describing personalized plans and guidance.

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

Comfort depends on wrist and expectations: some reviewers found it comfortable, while others felt the weight or bulk.

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

The companion app setup is useful but split, with health and smartwatch settings divided between Samsung Health and Galaxy Wearable.

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

Contactless payments are supported through Samsung Wallet or Samsung Pay shortcuts.

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

Cross-platform compatibility is limited: reviews say it works with Android but not iPhone, with the best experience tied to Samsung phones.

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 across programmable buttons, widgets, tiles, colors, and watch-face data.

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

Display quality is a major strength, with repeated praise for the large, vibrant AMOLED display.

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

Durability is a standout, backed by titanium construction, MIL-STD claims, scratch protection, and reviewer reports of little damage.

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

ECG functionality is widely listed as part of the health feature set, though one review notes Samsung-phone pairing requirements for ECG and blood pressure.

ECG functionality is absent according to the review evidence.

Fit is polarizing: it can fit some larger wrists well, but reviewers also note the single 47mm size and large wrist footprint.

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

Fitness tracking accuracy is generally good for everyday and running use, though scientific testing places it below the top alternatives.

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 good in several reviewer tests and supports dual-frequency GPS, but scientific testing found some route deviation.

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 feature-rich but mixed in accuracy, with strong sensor coverage offset by questionable antioxidant, HRV, and some sleep-stage findings.

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

Heart-rate accuracy is strongest in running evidence, with one reviewer matching a Polar strap closely, while scientific testing calls it good rather than elite.

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

LTE is a consistent advantage because it is standard or broadly available, though one reviewer notes carrier setup can cost extra.

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

Navigation support is useful through offline maps, Google Maps routing, and GPS widgets, but one reviewer notes no built-in maps on-watch.

Materials quality is strong, centered on titanium, sapphire/robust design references, and corrosion-resistant claims.

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

Menu navigation is mostly straightforward through swipes, app drawers, digital bezel haptics, and simple operation.

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

Music features are useful for downloaded Spotify, streaming, media tiles, and larger storage for music.

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

Onboard storage is a clear 2025 upgrade, repeatedly described as 64GB and useful for music, apps, and offline maps.

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

The operating system experience benefits from One UI 8/Wear OS updates, Gemini, Now Bar, and refreshed interface features.

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

Outdoor visibility is excellent, with multiple reviewers saying the bright display remains readable in sunlight.

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

Pairing and setup reliability are positive where tested, with instant recognition and quick setup noted.

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

Recovery-style insights are mixed: vascular load interests some reviewers, while HRV and related metrics draw skepticism.

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

Reliability is mostly acceptable but not flawless, with one review noting brief display interruptions and another calling performance not horrible rather than perfect.

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

Safety features include fall detection, emergency siren references, sleep apnea alerts, and related health/safety setup options.

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 limited by the single large 47mm format, though the band can fit a range of wrists and the screen size appeals to some users.

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 useful and improving, but reviewers disagree on sleep stages and awake-time accuracy.

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

Smartphone notifications are well supported, with reviewers noting detailed notification views and suggested replies.

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

Smartwatch features are broad, including LTE, calls, texts, Gemini, Now Bar, storage, and Samsung’s full watch software stack.

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 generally good, with smooth app launches and more functional One UI behavior, despite occasional reliability caveats.

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

Step counting is positive in basic walking tests, but one reviewer notes accuracy drops when arms are not swinging.

Stress tracking is included in Samsung’s health sensor set, though the reviews provide feature evidence more than accuracy testing.

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

Style is divisive: some reviewers like the rugged, colorful, stylish look, while others find it bulky or not pretty.

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 is solid through Google Play, fitness apps such as Strava and Map My Run, and a growing Wear OS app selection.

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 and gesture operation are described as intentional and straightforward in the long-term review evidence.

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

The user interface is improved and functional, though some reviewers dislike parts of the visual layout.

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

Value for money is the main weak point because reviewers repeatedly question the high price and minimal 2025 hardware changes.

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 quality is a strength with Gemini, which reviewers describe as convenient, useful, and directly available on the wrist.

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

Watch faces are a strength, with reviewers praising quantity, customization, and Samsung’s polished face designs.

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

Water resistance is a strong feature, with reviews citing 5ATM/10ATM ratings, IP68 claims, and pool/rain/snow use.

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

Wellness insights are useful but uneven: sleep coaching and vascular load get interest, while energy score and antioxidant index receive skepticism.

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

Wi-Fi support is present across connectivity mentions, including LTE/Wi-Fi model references.

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 strong, with reviewers citing many tracked activities, multisport/triathlon capability, and broad exercise lists.

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