Compare CMF Watch 3 Pro vs Apple Watch SE 3

Activity auto-detection exists and can work for walks and common activities, but one reviewer warns that manual workout starts are still safer.

Reviewers found automatic workout or walk detection useful and generally dependable, though one noted occasional slower workout-end recognition.

The app ecosystem is limited: syncing with fitness services helps, but the proprietary OS lacks the breadth of Wear OS or full third-party app access.

The app ecosystem is a major strength, with reviewers praising the Apple Watch App Store and broad app availability compared with rival budget watches.

Band quality is mixed: several reviewers like the soft, replaceable strap, while others call it floppy, lighter-quality, or irritating.

Band support is a strength because the SE 3 uses Apple’s familiar strap system and has many Apple and third-party options.

Battery life is one of the strongest points, with many reviewers seeing multi-day to week-plus endurance and some highlighting 13-day claims or better-than-expected results.

Battery life is the clearest mixed area: some reviewers saw all-day or better results, while others still treated it as a daily-charge watch.

Blood oxygen tracking is present, with alerts or spot readings mentioned, and one reviewer found readings close to a pulse oximeter, though reviewers did not deeply validate it.

Blood oxygen tracking is consistently described as missing from the SE 3, making it a clear limitation versus Series and Ultra models.

Bluetooth connectivity is mostly stable once paired in positive reviews, though one reviewer notes the connectivity stack is limited to Bluetooth Low Energy.

Bluetooth support is present and useful for headphones and audio, though reviewers mostly mention it as part of the connectivity package rather than a standout feature.

Brightness is adequate in some normal situations, but reviewers often call it low by current standards or wish it were brighter.

Brightness is adequate for many reviewers, but the 1,000-nit display is repeatedly framed as weaker than the Series 11 in direct sunlight.

Build quality divides reviewers: several find the fit and finish surprisingly good for the price, while others call it cheap, plasticky, rattly, or toy-like.

Build quality is generally praised as light, well made, and attractive, with tougher glass helping the SE 3 feel less like a budget device.

Button controls are mostly liked, especially the crown, haptics, and shortcuts, but reviewers also note size or underused crown interactions.

Button and gesture controls are strongly received, especially the Digital Crown, side button, Double Tap, and Wrist Flick gestures.

Call handling is better than expected for a budget smartwatch, with reviewers reporting usable microphones and clear calls, though speaker loudness can limit outdoor use.

Call handling is solid for a wrist device, with useful speaker, microphone, cellular, and voice isolation notes, though it is not ideal as a primary phone substitute.

Calorie data is useful as part of workout summaries for casual tracking, but reviewers treat it as general guidance rather than laboratory-grade measurement.

Calorie tracking is treated as part of the reliable core fitness feature set, with one reviewer noting workout calorie metrics matched comparison data.

Charging convenience is a consistent complaint because the proprietary magnetic connector is flimsy, easy to dislodge, or awkward to use.

Charging convenience improves with USB-C magnetic charging and fast top-ups, but sleep tracking still requires a daily charging routine for many users.

Charging speed is acceptable rather than exceptional, usually described around 90 to 99 minutes for a full charge or decent partial top-ups.

Charging speed is a repeated upgrade, with reviewers citing useful fast-charge top-ups and roughly 80 percent in around 45 minutes to an hour.

Coaching features are a clear selling point, especially the running coach and AI plan guidance, although reviewers treat it as helpful rather than flawless.

Coaching features are useful but not deeply advanced; Workout Buddy is described as beginner-friendly, motivational, or basic depending on the reviewer.

Comfort is generally helped by the low weight, though size, poor fit for some wrists, and one uncomfortable experience keep it from being universally comfortable.

Comfort is a strength, with reviewers calling the watch lightweight, unobtrusive, and well suited to sleep or smaller wrists.

The companion app is cleaner and more polished than before, but limitations around workout records, battery drain, language issues, exports, and data depth remain.

Companion app quality is functional but split across Watch, Health, and Fitness apps, which can be useful yet occasionally tedious.

Contactless payments are a clear miss: multiple reviewers note the absence of NFC or wallet payments.

Contactless payments are a strong Apple Watch staple, with Apple Pay repeatedly included among the SE 3’s core smartwatch strengths.

Cross-platform compatibility is a strength for a budget watch, with reviewers noting Android and iPhone support and basic assistant use across platforms.

Cross-platform compatibility is weak because reviewers frame the SE 3 as an iPhone smartwatch and note it only works with iPhone.

Customization is mixed: watch faces, widgets, gestures, AOD and bands give flexibility, but the lost interchangeable bezel and limited widget or face storage disappoint reviewers.

Customization is strong across watch faces, metrics, widgets, bands, and gesture-driven controls.

Display quality is generally praised for the AMOLED panel, larger size, sharpness, and readability indoors, even when brightness has limits.

Display quality is much improved by the always-on OLED screen, though thicker bezels and lower brightness keep it below Series and Ultra displays.

Durability evidence is limited but mixed: one reviewer noticed an early screen scratch, while another found the body and screen held up after daily use and a drop.

Durability is improved through tougher Ion-X glass and water resistance, but some reviewers still point to weaker scratch or dust protection than pricier models.

ECG functionality is absent, and reviewers repeatedly call this one of the main health-feature tradeoffs.

Fit is a weakness for smaller wrists in the available evidence, with reviewers noting poor fit or the watch being too large.

Fit is favorable for smaller wrists and sleep tracking, though one reviewer found the older chassis less flush than newer models.

Fitness tracking accuracy is acceptable for casual use in some reviews but unreliable in others, especially for sleep-related confidence, workouts, running, and weightlifting.

Fitness tracking accuracy is a strong point, with reviewers reporting accurate workouts and close agreement with comparison devices.

GPS is generally praised after the upgrade to dual-band tracking, with fast lock times and strong route accuracy, though one scientific reviewer questioned recording frequency.

GPS accuracy is generally strong for a single-band Apple Watch, with caveats in tall-building or canyon-like conditions.

Reviewers describe the health suite as broad for the price, with heart rate, sleep, stress and blood oxygen options, but accuracy and depth are inconsistent across tests.

Health tracking accuracy is solid for the essentials, especially heart rate, sleep, and workouts, while advanced sensors are omitted.

Heart rate accuracy is one of the most divided areas: some reviewers saw close agreement with reference devices, while others found misses during runs, workouts, or loose wear.

Heart-rate accuracy is repeatedly praised, with reviewers finding close agreement against straps or other watches.

LTE and cellular connectivity are improved by 5G, with reviewers noting better coverage, calls, texts, messages, and downloads away from the phone.

Mapping and navigation are useful thanks to Apple Maps, offline maps, Find My basics, and Compass Backtrack, though precision finding is limited.

Materials are mixed, with metal or aluminum elements helping the watch feel better than expected, but plastic backs, bezels, and sensor areas reduce the premium feel.

Materials quality is good for the price, with aluminum and Ion-X glass, but premium titanium, sapphire, and some rugged ratings remain reserved for higher models.

Menu navigation is straightforward and crown-assisted, though some reviewers note the interface does not fully exploit the crown or gestures.

Menu navigation is easy and fast, helped by watchOS, the Digital Crown, touch controls, and one-handed gestures.

Music controls are useful for phone playback, including album artwork in one review, but the watch is not presented as a standalone music device.

Music controls are a strength, including Apple Music pairing, media controls, and playback improvements.

Onboard music storage is absent, limiting the watch for phone-free exercise with wireless earbuds.

Onboard storage and offline playback are improved, with 64GB storage and support for music or media without the phone nearby.

The operating system experience is repeatedly described as polished, smooth, and quality-feeling for the price.

The operating system experience is a major strength; reviewers praise watchOS 26 as polished, cohesive, and rich in Apple Watch features.

Outdoor visibility is a recurring weakness, especially with the always-on display, direct sunlight, or polarized sunglasses.

Outdoor visibility is usable but not class-leading, with the 1,000-nit screen and direct sunlight repeatedly cited as limits.

Pairing reliability is mixed: some reviewers found setup or phone switching easy, while others had a difficult pairing process or disconnections from the app.

Pairing and iPhone integration are strong, with reviewers praising how well the watch syncs, routes notifications, and pairs with Apple services.

Recovery insights show up as estimated recovery time, VO2 max, training load, and recovery metrics, giving runners and casual athletes more guidance than expected at this price.

Recovery insights are present through training load, Vitals, sleep score, and workout feedback, but they are not as deep or prescriptive as some rivals.

Reliability is mixed, with reviewers citing notification sync issues, app optimization problems, app disconnects, and work-in-progress software behavior.

Reliability appears strong in everyday use, with reviewers emphasizing smooth performance and lack of issues in ordinary tasks.

Safety features are a major strength, including fall detection, crash detection, emergency SOS, heart-rate alerts, and Compass Backtrack.

Size options are limited to one case size, which reviewers repeatedly flag as a problem for smaller wrists.

Size options are adequate and familiar at 40mm and 44mm, with the smaller size appealing to smaller wrists, though color choices are limited.

Sleep tracking ranges from impressive duration or comparative results to very poor awake detection, so reviewers do not agree that it is dependable for serious sleep analysis.

Sleep tracking is useful and generally accurate for time and stages, but sleep score is sometimes described as simple or limited.

Notifications are useful for quick wrist checks and preset replies, but syncing and clearing behavior can be one-way or limited depending on phone platform.

Notifications are a core strength, especially with always-on viewing, wrist vibration routing, and gestures for dismissal or management.

Smartwatch features cover basics such as notifications, camera shutter, calls, recorder, weather, music control, calendar, assistant access, and news, but not advanced platform features.

Smartwatch features are excellent for the price, with reviewers emphasizing that it feels like a full Apple Watch rather than a stripped-down tracker.

Software smoothness is generally strong, with several reviewers praising fluid animations and scrolling, but one negative review saw lag and another saw small pauses.

Software smoothness is one of the clearest strengths because the S10 chip keeps watchOS, apps, and gestures fast and responsive.

Step-counting evidence is limited and mixed, with one reviewer seeing a sizeable difference between the watch and Google Fit by the end of the day.

Step counting appears as part of the core activity toolkit, though reviewers discuss the feature more than rigorous step-count accuracy.

Stress tracking and guided breathing are repeatedly mentioned, but at least one long-term reviewer found stress readings temperamental and not reflective of real stress.

Style and design are among the most praised areas, although a few reviewers dislike the plasticky or average feel.

Style and design are mixed: reviewers like the familiar Apple Watch look but often criticize the older body, thicker bezels, and limited colors.

Third-party app support is weak because reviewers repeatedly note that apps cannot be installed or accessed like on fuller smartwatch platforms.

Third-party app support is strong because the SE 3 retains Apple’s large app store and broad developer support.

Touchscreen responsiveness is mixed: some reviewers praise smoothness while others report lag, missed swipes, or always-on behavior that does not work as expected.

Touchscreen responsiveness is strong, with reviewers saying touch, buttons, gestures, and everyday controls work promptly and fluidly.

The user interface earns praise for being clean, polished, readable, and visually appealing, especially with Nothing's minimal monochrome style.

The user interface is easy, clean, and cohesive, especially with watchOS 26 and the familiar watch face/home structure.

Value for money is strong overall because many reviewers find the design, display, battery, GPS, and basics impressive for around $99, despite harsher dissent.

Value for money is the strongest consensus attribute, with reviewers repeatedly saying the SE 3 offers near-Series functionality at a much lower price.

Voice assistant support is useful when it triggers Siri, Gemini, or ChatGPT through a compatible phone, but ChatGPT support is limited and inconsistent across phones.

Voice assistant quality improves with on-device Siri and the S10 chip, making requests faster and more useful than earlier SE models.

Watch faces are a standout design strength, with many reviewers praising the quantity, style, AOD support, and creative video or AI face options.

Watch face quality is praised through attractive, high-quality options and watchOS 26 face support.

Water resistance is a major caveat: ratings are mentioned repeatedly, but reviewers stress that swimming, pools, oceans, or showers are not recommended.

Water resistance is solid for typical use, with reviewers noting 50-meter or 164-foot resistance and swim tracking, but not advanced dive sensors.

Wellness insights are shallow compared with the raw metrics: reviewers wanted more written explanations or practical advice from sleep and health data.

Wellness insights are useful for mainstream users through sleep score, sleep apnea alerts, wrist temperature, Vitals, and heart-rate notifications.

Wi-Fi is not available according to the reviewer evidence, which limits independent connectivity.

Wi-Fi is adequate but not premium, with reviewers noting 2.4GHz-only or Wi-Fi 4 support rather than dual-band.

Workout variety is a major strength: reviewers consistently note the huge list of sports modes, often around 131 options, covering mainstream and niche activities.

Workout tracking variety is strong, covering many sports, workouts, running metrics, swimming, and common gym activities.