Compare CMF Watch Pro 2 vs Amazfit Active 3 Premium

Auto-detection exists for walking, running, and cycling, but reviewers split between successful prompts and delayed, missed, or false detections.

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 watch has a closed, basic app ecosystem: the companion app is available, but there is no onboard app store or downloadable app catalog.

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 mixed, with several reviewers finding the straps comfortable or good quality while others called the leather or silicone options cheap-feeling.

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

Battery life is a repeated strength, commonly landing from four to twelve days depending on always-on display, health monitoring, GPS, and calling use.

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 and often works acceptably for spot or continuous readings, though it is part of a broader basic health-tracking package.

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

Bluetooth support enables phone pairing and calls, but reliability varies sharply, with some reviewers reporting stable connections and others seeing frequent disconnects.

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

Brightness is generally strong for the price indoors and in many outdoor conditions, but several reviewers found auto-brightness or direct-sun readability imperfect.

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

Build quality is praised for the price by some reviewers, especially the aluminum construction, while others felt the lightweight body and crown exposed budget compromises.

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

The rotating crown is useful and sometimes praised, but it is also described as stiff, flimsy, awkward, or cheap-feeling in several reviews.

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

Bluetooth calling is one of the better smart features, with multiple reviewers saying the mic and speaker were usable or good for wrist calls.

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

Calorie tracking has limited support and one reviewer found calorie estimates off, so it should be treated as a rough indicator rather than a precise metric.

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

Charging uses a small magnetic pogo-pin cable that works, but reviewers often found it fiddly, weakly attached, or easy to misalign.

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

Charging speed is average rather than fast, with reviewers citing roughly 90 to 120 minutes for a full charge.

Coaching is modest but surprisingly present for the price, mainly through guided warm-ups, active score, training load, workout effectiveness, and recovery-time estimates.

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

Comfort is a consistent positive, helped by low weight, soft straps in some configurations, and a case size that several reviewers found easy to wear.

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

The companion app ranges from excellent and clear to buggy depending on reviewer, with several praising the design while others saw syncing, export, or crash issues.

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 absent; reviewers repeatedly cite no NFC or wireless payments as a key missing smartwatch feature.

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

Cross-platform compatibility is a strength, with the watch working on both Android and iPhone through the CMF Watch app.

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 a signature appeal through swappable bezels, 22mm bands, widgets, and watch faces, though availability and storage limits reduce the promise.

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

Display quality is one of the strongest areas, with the AMOLED panel repeatedly praised for sharpness, vibrancy, responsiveness, and value at the price.

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

Durability impressions are mixed: several reviewers saw no scratches or damage, while others questioned scratch resistance, wall-slam resilience, or glass protection.

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

ECG is not supported, and reviewers position it among the advanced health features missing at this price.

ECG functionality is absent according to the review evidence.

Fit is generally positive, with the round case described as a good middle size for many wrists, though not every reviewer preferred the shape.

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 highly mixed, ranging from surprisingly close workout distances to poor health and workout tracking in stricter tests.

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 is included, but reviewers repeatedly mention slow lock-on; accuracy after lock ranges from rough to good depending on conditions and reviewer.

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.

General health tracking accuracy is one of the weaker areas, with several reviewers warning that sensor data can be inaccurate or unreliable.

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

Heart-rate accuracy is inconsistent across reviews, from close comparisons with oximeters, Garmin, or Whoop to serious misses during intervals and workouts.

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

LTE or standalone cellular connectivity is absent, keeping the watch dependent on a paired phone for connected features.

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

Materials are better than expected for the price in some reviews thanks to aluminum, but the watch can still feel cheap or plastic-like to others.

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

Menu navigation is mostly simple and smooth through swipes and the crown, though the crown does not control every screen.

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

Music controls are available for phone playback and often work well, but there is no standalone music experience.

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

Onboard music storage is absent, so users cannot store music or pair audio devices directly to the watch for phone-free listening.

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

The proprietary operating system has a distinctive CMF/Nothing style and good battery benefits, but it remains basic compared with Wear OS or watchOS.

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

Outdoor visibility is context-dependent: the main display can be readable, but AOD, direct sun, and auto-brightness behavior drew repeated complaints.

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

Pairing is often easy and quick, but some reviewers experienced syncing or reconnection issues after initial setup.

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

Recovery and training insights are unusually ambitious for the price, but they are light and not as deep as premium health platforms.

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

Reliability is uneven, with good battery and smooth basic use offset by quirks around wake gestures, timers, disconnects, syncing, and notifications.

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

Safety features are basic, limited mostly to health alerts such as abnormal heart rate or blood oxygen, while reviewers also note missing watch security.

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

Sleep tracking accuracy is sharply divided, with some reviewers seeing good sleep/wake times and others finding stages, awake periods, and totals unreliable.

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

Notifications are useful for basic triage, but interaction is limited and several reviewers report delayed, unreliable, or clumsy notification behavior.

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

Smartwatch features cover basics like calls, notifications, weather, alarms, reminders, and tools, but the overall experience is closer to a smart fitness watch.

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 mixed: many reviewers call it snappy or improved, while others encountered lag, bugs, or delayed actions.

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

Step counting is adequate for rough daily activity in some reviews but not consistently precise against other trackers.

Stress tracking is present and sometimes aligns with reference wearables, but reviewers also describe it as not very helpful or inaccurate.

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

Style and design are among the watch's clearest wins, with reviewers repeatedly praising the distinctive round look, colors, and modular bezel concept.

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 very limited: there is no app store, no downloadable watch apps, and no third-party watch faces.

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 is generally good, with reviewers using it to compensate for limited physical buttons and praising the display responsiveness.

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

The user interface is simple, stylish, and easy to learn, though several reviewers note it remains basic and sometimes optimized imperfectly for a round screen.

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

Value for money is the dominant positive, with reviewers repeatedly balancing the $69 price against compromises in smarts, tracking, and reliability.

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

The voice assistant is phone-relayed rather than native, and reviewers often describe it as limited, gimmicky, or unreliable.

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

Watch faces are plentiful and stylistically distinctive, but reviewers criticize storage limits, branding, customization depth, and AOD mismatch.

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

Water resistance is IP68, which covers splashes and immersion claims, but multiple reviewers warn it lacks swimming-grade protection or 5ATM support.

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

Wellness insights are shallow: the watch records basic metrics, but reviewers repeatedly say it lacks deeper scores, trends, or actionable interpretation.

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

Wi-Fi is not included, reinforcing the watch's dependence on Bluetooth and a paired phone.

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 for the price, with reviewers repeatedly citing roughly 120 sport modes and multiple auto-recognized activities.

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