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Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →The CMF Watch 3 Pro is a $99 smartwatch built around affordable GPS fitness tracking, a large AMOLED display and app-based AI coaching. Announced on July 22, 2025, it adds dual-band GPS, 131 sports modes, expanded health tracking, a custom running coach and ChatGPT integration to Nothing’s budget wearable range. Nothing’s US store displayed a temporary $79 price when checked on August 16, 2026, but the discount and stock may change.
What is the CMF Watch 3 Pro?
The CMF Watch 3 Pro is an inexpensive smartwatch from CMF by Nothing, positioned as an upgrade to the CMF Watch Pro 2. Its main appeal is the combination of a 1.43-inch AMOLED display, built-in dual-band GPS, long claimed battery life and broad everyday fitness tracking at a sub-$100 launch price.
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The watch works with Android phones and iPhones through the Nothing X app. That app is central to the experience: it handles pairing, firmware updates, watch faces, health dashboards, fitness plans, data synchronization and several AI-related features.
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Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →At launch, the US price was $99, with regional pricing of £99 in the UK and €99 in Europe. The official US product page later showed $79 reduced from $99. Treat that as a dated promotion rather than the permanent list price. Check Nothing’s store for current price, color availability and delivery conditions.
#1 Best Overall
- 24/7 Health Tracking: Watch 3 Pro can monitor heart rate, blood oxygen (SpO₂), stress levels in real time with an advanced 4-channel sensor for improved accuracy during activity and rest. This health tracker smartwatch can offer advanced sleep tracking helps analyze naps, recovery, and sleep quality for better daily wellness insights.
- 130+ Sports Modes: The sports smartwatch supports 130+ exercise modes with GOMORE-powered performance analysis, 7-type motion recognition, and precision activity tracking to help monitor workouts, training load, recovery, and daily movement more accurately. Active Score (MET-based fitness tracking), precision step counting, and smart health guidance help support a healthier lifestyle.
- Smart Everyday Convenience: Stay connected with the bluetooth smartwatch featuring dual high-performance MEMS microphones, a built-in speaker, and AI-based noise reduction trained on over 100,000 voice samples for clearer calls. Make and receive calls directly from your wrist, sync up to 30 contacts for quick access, control music playback, and send quick replies while working, commuting, cooking, or exercising without constantly checking your phone.
- 13-Day Battery Life: Enjoy up to 13 days of battery life on the smartwatch with just 2.5 hours charging time for daily use. Designed for work, workouts, travel, and busy schedules, CMF Watch 3 Pro delivers reliable power for music playback, quick replies, calls, and everyday activity tracking without frequent charging interruptions.
- AMOLED Display & Smart Lifestyle Sync: Featuring a vibrant AMOLED display, this smartwatch for Android and iPhone delivers clear visibility for health data, messages, and workouts indoors or outdoors. Seamlessly sync with Apple Health, Google Fit, and Strava to manage fitness tracking, wellness insights, and daily activity data in one connected ecosystem.
View the CMF Watch 3 Pro on Nothing’s official US store.
CMF Watch 3 Pro: key specifications
| Feature | Details |
|---|---|
| Display | 1.43-inch AMOLED with Always-On Display support |
| GPS | Built-in dual-band GPS using L1 and L5 signals |
| Satellite systems | GPS, GLONASS, Galileo, BeiDou and QZSS |
| Sports modes | 131 listed modes |
| Automatic activity recognition | Seven activity types |
| Typical battery claim | Up to 13 days |
| Heavy-use claim | Up to 10 days |
| Always-On Display claim | Up to 4.5 days |
| Water and dust resistance | IP68 under controlled laboratory conditions |
| Phone compatibility | Android and iOS through Nothing X |
| Health integrations | Apple Health, Google Health Connect and Strava, subject to app permissions and support |
| Colors | Dark Grey, Light Grey and Orange, with regional availability varying |
The battery figures are “up to” claims, not guarantees. Nothing’s 13-day scenario uses defined settings and limited workout use. GPS recording, calls, frequent heart-rate or blood-oxygen checks, stress monitoring, notifications, screen brightness and Always-On Display use will reduce endurance. Secondary launch coverage also reported a power-saving figure of up to 60 days, but that represents a heavily restricted mode rather than normal smartwatch use.
What does “AI-powered fitness” mean?
The Watch 3 Pro is not an autonomous AI trainer or a medical device. Its “AI-powered” label mainly describes software that interprets activity data, creates guidance and adds natural-language tools inside the Nothing X ecosystem.
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Custom Running Coach
Nothing’s clearest AI fitness feature is Custom Running Coach. In the Nothing X app, users create an 8- to 16-week running plan based on their goals, current fitness level and recovery information. The feature is primarily presented as a running tool, so buyers should not assume it provides equally detailed coaching for all 131 sports modes.
The plan can make a low-cost watch more useful for casual runners who need structure. However, it should be treated as algorithmic guidance rather than a substitute for a coach, sports-science assessment or clinically validated training program.
Workout analysis and recovery estimates
Nothing describes post-workout summaries that can include training-load interpretation, estimated recovery time, fitness and performance insights, and predicted 5K and 10K endurance times. These are estimates generated from the watch’s recorded data. They are not laboratory performance tests, medical conclusions or proof of readiness for a particular race.
Rank #2
- 24/7 Health Tracking: Watch 3 Pro can monitor heart rate, blood oxygen (SpO₂), stress levels in real time with an advanced 4-channel sensor for improved accuracy during activity and rest. This health tracker smartwatch can offer advanced sleep tracking helps analyze naps, recovery, and sleep quality for better daily wellness insights.
- 130+ Sports Modes: The sports smartwatch supports 130+ exercise modes with GOMORE-powered performance analysis, 7-type motion recognition, and precision activity tracking to help monitor workouts, training load, recovery, and daily movement more accurately. Active Score (MET-based fitness tracking), precision step counting, and smart health guidance help support a healthier lifestyle.
- Smart Everyday Convenience: Stay connected with the bluetooth smartwatch featuring dual high-performance MEMS microphones, a built-in speaker, and AI-based noise reduction trained on over 100,000 voice samples for clearer calls. Make and receive calls directly from your wrist, sync up to 30 contacts for quick access, control music playback, and send quick replies while working, commuting, cooking, or exercising without constantly checking your phone.
- 13-Day Battery Life: Enjoy up to 13 days of battery life on the smartwatch with just 2.5 hours charging time for daily use. Designed for work, workouts, travel, and busy schedules, CMF Watch 3 Pro delivers reliable power for music playback, quick replies, calls, and everyday activity tracking without frequent charging interruptions.
- AMOLED Display & Smart Lifestyle Sync: Featuring a vibrant AMOLED display, this smartwatch for Android and iPhone delivers clear visibility for health data, messages, and workouts indoors or outdoors. Seamlessly sync with Apple Health, Google Fit, and Strava to manage fitness tracking, wellness insights, and daily activity data in one connected ecosystem.
ChatGPT through Nothing X
ChatGPT is integrated into the Nothing X experience, with voice prompts available through the watch when it is connected to a phone. This can make the watch useful for conversational prompts and assistance, but it is not a standalone cellular AI assistant. The phone connection and app setup remain important, and Nothing’s product notes say third-party voice calls are not supported.
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Nothing also promotes app-level features such as health insights, news briefings and voice memos. Availability and reliability may vary by phone, country, firmware and app version. In one TechRadar review, the Essential News feature did not work reliably for the tester; that is an attributed review experience, not proof that the feature fails for every user.
Fitness and health tracking
The Watch 3 Pro supports automatic and 24-hour heart-rate monitoring, resting and exercise heart rate, heart-rate alerts and heart-rate zones. It also tracks blood oxygen (SpO₂), stress, sleep, steps, calories, distance and exercise duration.
Additional wellness tools include an Active Score, breathing exercises, water reminders, stand-up reminders and menstrual-cycle tracking with prompts. Sleep features include sleep detection, nap detection, sleep-stage analysis and a higher-precision tracking mode.
Health warning: Nothing says the heart-rate, SpO₂ and stress features are for health and personal reference only. They are not intended for diagnosis, prevention, clinical monitoring, prediction, prognosis or treatment. Do not use the watch to make medical decisions or replace professional care.
Heart-rate sensor claims
Nothing says the updated optical sensor captures more detailed light signals and improves accuracy by up to 7% during exercise and 3.6% at rest compared with previous generations. Those are manufacturer claims, not independent test results. Real-world readings can vary with fit, movement, sweat, skin contact, tattoos, body hair, cold temperatures and the type of workout.
Rank #3
- Compatibility: Specially Designed Tempered Glass Screen Protector for CMF Watch 3 Pro
- Perfect Touch response: Glass Thin Material gives you the experience of feeling the original screen
- Strong Protection: 9H strong-hardness prevents scratches from keys and other outside objects. 99% HD Clarity and Maintains the Original Touch Experience
- Easy Installation: Our screen protector comes with dust remover, screen wipe and lint-free dry cloth. Ensure no air bubbles and easy installation
- Orzero Customer Service: Protected by Orzero Service. If there is any quality problem, please feel free to contact us
131 sports modes: broad coverage, not 131 advanced analyses
The large mode count covers mainstream and niche activities, but a selectable sport label does not necessarily mean the watch supplies specialized metrics for that sport. Some modes may primarily record time, heart rate, calories and generic activity data. Seven activity types support smart automatic recognition.
Dual-band GPS
The built-in GPS can record outdoor workouts without relying entirely on a phone’s GPS. It supports L1 and L5 signals as well as GPS, GLONASS, Galileo, BeiDou and QZSS. Nothing says dual-band positioning is intended to improve acquisition speed and route stability, particularly around buildings and trees.
Dual-band GPS is not a guarantee of perfect tracks. Buildings, tree cover, satellite geometry, firmware and how the watch is worn can all affect positioning. Wait for a GPS lock before starting a run, keep the watch exposed rather than covered by clothing and compare several activities before judging its performance.
Daily smartwatch features and battery expectations
Beyond fitness, the watch supports notifications, Bluetooth calling, music controls, camera remote functions, weather, reminders and other everyday tools. Voice memos and transcription are part of the Nothing X feature ecosystem.
Its claimed endurance is a major advantage over many full smartwatch platforms. Nothing quotes up to 13 days in a typical-use scenario, up to 10 days with heavier use and up to 4.5 days with the Always-On Display enabled. GPS-heavy training, frequent calls and continuous monitoring can shorten those figures substantially.
The watch is best understood as a phone-connected wearable rather than a miniature phone. Outdoor workout recording can use the watch’s own GPS, but syncing, weather, messages, calls, AI functions and many smart features depend on the connected smartphone.
Rank #4
- All-Round Health Monitor,Your Health Journey: CMF Smart Watch Pro 2 is a portable blood oxygen saturation monitor designed for both men and women. The heart monitor tracks your heart rate continuously for 24 hours a day, along with recording sleep patterns, stress levels, and SpO₂ levels. Seamlessly sync and manage your fitness data across Apple Health, Google Health Connect, and Strava. You can also synchronize data between your app and the watch for comprehensive health tracking.
- Bluetooth Calls and Gesture Control:The CMF Smartwatch enables crystal-clear Bluetooth phone calls with enhanced AI noise reduction technology. Equipped with a built-in microphone and speaker, the Watch Pro 2 ensures seamless communication. You can add and manage up to 30 contacts on your watch, allowing you to handle calls directly from your wrist. Real-time message reminders are also supported.The new gesture control feature allows one-handed operation of the watch using wrist movements. For example, flipping your wrist once or twice can trigger customized functions such as answering/rejecting/ignoring incoming calls, skipping to the next/previous music track, performing other operations.
- Interactive Design with Interchangeable Bezels and Straps:The CMF Watch Pro 2 features a 1.32" AMOLED display that delivers sharp, vibrant visuals with enhanced resolution (466 x 466), 353 PPI, and a refresh rate of 60Hz. It is a stylish and feature-packed smartwatch offering an interchangeable bezel design and removable watch straps, allowing effortless switching between styles to suit any occasion. With over 100 signature watch faces and customizable options, you can create personalized combinations.
- 120 Sports Modes with IP68 Waterproof: The CMF fitness tracker smartwatch is IP68 waterproof and supports 120 sports modes, including smart automatic recognition of 5 common activities. It features a 3D warm-up exercise guide and 'My Heart Rate' for personalized heart rate zones. The Smart Movement Algorithm tracks sports data, measures aerobic and anaerobic training effectiveness, training load, and recovery time. Fitness data can be seamlessly shared with Apple Health, Google Health Connect, and Strava.
- Smoothly Watch APP and More Performance: Enjoy seamless connectivity with the CMF Watch app. Manage and control your preferred features with a long battery life of up to 11 days. The watch offers smart functionalities including notifications, quick Android SMS replies, find my phone, camera control, alarms, timers, weather forecasts, music control, and multi-system GPS.
Nothing X, compatibility and setup
Install the latest Nothing X app from the Google Play Store or Apple App Store, pair the watch through Nothing X and update the firmware after the first connection. Android users need Android 9 or later for Google Health Connect functionality. Music controls support Android 6.0 or later and iOS 13 or later.
Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Fix the driver behind crashes, sound loss and screen glitches3Clear out junk files and repair common Windows errorsThe app manages:
- Initial pairing and device settings
- Firmware updates
- Watch-face downloads and customization
- Health dashboards and sleep data
- Running plans and recovery insights
- ChatGPT, news briefings and voice memos
- Apple Health, Google Health Connect and Strava synchronization
Users should expect to grant Bluetooth, notification, health-data and background-activity permissions. Some functions may be limited to Nothing phone users, and feature availability can change with the operating system, country, app release and firmware.
If pairing fails
- Update Nothing X and turn on Bluetooth.
- Grant the app its required notification, health and background permissions.
- Pair through Nothing X rather than only through the phone’s Bluetooth settings.
- Restart both devices and update the watch firmware.
- If necessary, remove an old watch entry from the phone’s Bluetooth settings and try again.
- Check that the watch is not still bound to another phone.
- On Android, prevent battery optimization from stopping Nothing X in the background.
The last troubleshooting steps are standard practical guidance; exact menus vary by phone manufacturer.
IP68 does not make the Watch 3 Pro swim-proof
Do not buy the Watch 3 Pro as a swimming watch. Nothing says its IP68 testing covered immersion in still, clear water for up to 30 minutes at 1.1 metres or less, but it advises against using the watch in swimming pools, shallow water, hot showers, hot springs, saunas, steam rooms, scuba or deep diving, platform diving, high-pressure water and high-temperature or high-water-level activities.
In practical terms, IP68 makes it more suitable for rain, sweat and accidental splashes within the stated limits. Water resistance can decline through normal wear. Do not charge it while wet, and avoid soap, shampoo and pressurized spray.
Data syncing and practical limitations
Nothing advertises integration with Apple Health, Google Health Connect and Strava. That is useful for buyers who do not want their activity data locked entirely inside Nothing X, but app permissions and software versions matter.
Best Value
- CMF Watch Pro 2 is a portable blood oxygen saturation monitor.The heart monitor tracks your heart rate continuously for 24 hours a day, along with recording sleep patterns,stress,SpO ₂ levels.Seamlessly sync and manage your fitness data across Apple Health,Google Health Connect.For the best heart rate measurement,wear the watch a 1-2 fnger width distance from your wrist bone.To ensure that your Google Health Connect can work properly,please make sure your phone is updated to Android 9.0 or above
- The CMF Smartwatch enables crystal-clear Bluetooth calls with AI noise reduction, a built-in mic, and speaker, supporting 30 contacts. New gesture control allows one-handed operation for calls, music, and more. Requires Android 8.0/iOS 13+. Download the CMF Watch App, update firmware, and keep it updated for the best experience.
- 120 Sports Modes with IP68 Waterproof:The CMF fitness tracker smartwatch is IP68 waterproof and supports 120 sports modes,including smart automatic recognition of 5 common activities.It features a 3D warm-up exercise guide and ‘My Heart Rate' for personalized heart rate zones.The Smart Movement Algorithm tracks sports data,measures aerobic and anaerobic training effectiveness,training load,and recovery time. Fitness data can be seamlessly shared with Apple Health,Google Health Connect,and Strava
- Smoothly Watch APP and More Performance: Enjoy seamless connectivity with the CMF Watch app. Manage and control your preferred features with a long battery life of up to 11 days. The watch offers smart functionalities including notifications, quick Android SMS replies, find my phone, camera control, alarms, timers, weather forecasts, music control, and multi-system GPS.
- For accurate GPS positioning, ensure you're in an open area, connect to the app at least every 7 days, avoid locations with potential signal interference or large public transportation systems, and maintain a proper connection between your watch and phone.Note:If there is any malfunction with the watch, you can check it according to the instructions or contact us directl
User reports have described intermittent or incomplete Strava heart-rate synchronization. These reports are anecdotal and may depend on firmware, app version and phone, so they should be treated as a risk to investigate rather than a universal defect. Buyers whose training depends on dependable third-party export should test the exact workflow before committing.
Similarly, heart-rate and calorie differences between the watch and another service do not automatically indicate a defective sensor. Algorithms, fit, motion artifacts and the timing of data sampling can produce different results.
Who should buy the CMF Watch 3 Pro?
It is a strong fit for:
- Casual runners, walkers and general fitness users
- Nothing Phone owners who want tight ecosystem integration
- Android users prioritizing battery life and a low purchase price
- Buyers wanting built-in GPS and a large AMOLED screen under $100
- People who would benefit from a structured, app-generated running plan
Look elsewhere if you need:
- Swimming, diving or dependable pool tracking
- ECG, blood-pressure monitoring, medical alerts or clinical-grade data
- LTE or a truly phone-independent smartwatch
- A broad downloadable third-party app ecosystem like watchOS or Wear OS
- Advanced training-load, recovery, sensor and export workflows for competitive sport
- Apple Watch-level integration with an iPhone
- A wearable that works without creating an account or managing companion-app permissions
How it compares with the alternatives
An Apple Watch is the more natural choice for iPhone owners who value deeper phone integration and a larger app ecosystem, though it is generally less attractive for buyers prioritizing multi-day battery life or Android compatibility.
Samsung Galaxy Watch models offer broader Wear OS functionality and third-party app support, but usually sit in a higher price category. Amazfit is a relevant alternative for battery-focused fitness buyers, while Xiaomi Smart Band and Watch products can compete on price and health features. GPS availability, app quality, export support and regional availability vary by model, so these are comparison paths rather than direct one-to-one equivalents.
Verdict
The CMF Watch 3 Pro is compelling if the goal is an affordable smartwatch with GPS, a bright large display, long claimed battery life, notifications and everyday fitness guidance. Its AI story is most credible when described as a custom running-plan and workout-analysis layer inside Nothing X, with ChatGPT as a connected-phone feature.
It is less convincing as a serious sports platform, medical monitor or standalone smartwatch. The 131 sports modes do not guarantee advanced analytics, dual-band GPS cannot eliminate positioning errors, the app is essential, and IP68 should not be interpreted as swim protection. For casual runners and budget-conscious Android users, those compromises may be reasonable; for swimmers, competitive athletes and iPhone buyers seeking deep integration, they are decisive.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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