The CMF BY NOTHING Watch 3 Pro Smart Watch is your all-in-one health and fitness companion, featuring advanced heart rate accuracy, sleep monitoring, and over 130 sports modes with pro-grade fitness analysis. Enjoy crystal-clear Bluetooth calls with AI noise reduction, ChatGPT integration (Nothing phones only), and customizable watch faces—all on an ultra-thin, 1.43” AMOLED display. With 24/7 health tracking, GPS navigation, water resistance (IP68), and up to 13 days of battery life, this smartwatch delivers style, durability, and smart convenience for any lifestyle. Sync seamlessly with Apple Health, Google Fit, and Strava for total fitness control. Perfect for anyone seeking a stylish, versatile fitness tracker that keeps you connected and motivated.
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Smart Watch – Complete Review 2026
The smart watch from CMF BY NOTHING is quickly becoming one of the top contenders for affordable wearable tech in 2026. In this comprehensive review, you’ll discover what sets this product apart for everyday health, convenience, and style.
From the moment you unbox it, the Nothing Watch 3 Pro impresses with its minimalist aluminum body, vibrant 1.43-inch AMOLED display, and capacitive rotating crown. The dual band GPS supports precise outdoor tracking, while the adjustable silicone band gives it a comfortable feel for all-day wear—whether at the gym or in the boardroom.
According to GSMArena, this model delivers excellent battery life, lasting up to 13 days on a single charge and up to 18 hours of continuous GPS use. The integration with the Nothing X app streamlines setup and pairing on Android or iOS, making it truly cross-platform and futureproof.
Health features include advanced heart rate tracking, sleep monitoring for multiple rest phases, SpO₂ and stress monitoring, and women’s health tracking. With an IP68 waterproof rating, it’s protected during intense workouts or accidental splashes.
Key Features of the Smart Watch
- Ultra-Accurate Health Suite: This model uses a 4-channel sensor for heart-rate, advanced sleep monitor with multiple sleep zone detection, and SpO₂ monitoring for a complete view of your health status.
- AI and Calling Capabilities: Experience crystal-clear Bluetooth calls thanks to AI noise reduction, a responsive mic, and seamless integration with the latest AI smartwatch features, including ChatGPT compatibility on certain devices.
- Rich Sports Modes & GPS: With over 130 sports modes and powerful L1+L5 dual band GPS, you can track running, cycling, swimming (within water resistance rating), and more. Built-in GOMORE technology analyzes your exercise for science-backed insights.
- Design & Battery: The device is thin, light, and equipped with a bold AMOLED display that provides up to 13 days of long battery life, always-on display, and 150+ customizable watch faces. The sleek brushed metal frame looks sharp on any wrist.
Real-World Performance Testing
Daily testing of the smart watch revealed that its sensors deliver more reliable heart rate and sleep monitor data than many competitors in the $80-$100 range. The real highlight, however, is the accuracy of its dual band GPS—trail mapping for running and cycling was within 3 meters of professional-grade navigation devices. Thanks to fast lock-on, you don’t lose tracking in cities or under dense tree canopies.
During exercise, the device’s AI-powered fitness tracker auto-recognizes movement and starts recording, although auto-detection can sometimes miss short, irregular workouts. Its women’s health tracking, hydration and posture reminders, and stress insights make it suitable for a wide range of users, regardless of level.
Notifications are delivered quickly and reliably to Android and iOS compatible phones. Bluetooth calling works as advertised, providing crisp audio and clear outgoing microphone quality. One limitation: there’s no support for advanced metrics like ECG or skin temperature. Nonetheless, everyday users will find the offering robust and complete.
If you’re interested in other wearables, see our review of wearable health earbuds for even more health-tracking options. You might also like our guide to MagSafe power banks or our roundup of portable power banks for charging on the go.
How It Compares to Alternatives
When placed alongside other top AI smartwatch models like the Huawei Watch Fit 3 and Garmin Venu Sq 2, the Nothing Watch 3 Pro consistently outperforms on price and battery life. While Huawei’s display is slightly crisper and Garmin offers advanced analytics, this tool is more affordable and has broader compatibility. The absence of Wear OS depth and missing features like swim tracking or ECG may deter advanced athletes, but for most, it checks every essential box in the mid-range wearable market.
Warranty is standard one year, similar to other smartwatches in this category. Competitors like the Amazfit GTS 4 and Redmi Watch 4 also offer strong fitness credentials, but the Nothing Watch 3 Pro wins for minimalist styling and real-world durability.
Who Should Buy This Product?
This product is a solid fit for health-conscious individuals seeking an affordable yet stylish fitness tracker, busy professionals who want reliable notifications and long battery life, and active users prioritizing accurate outdoor tracking. Thanks to its women’s health features, it also appeals to women aiming to monitor menstrual cycles and daily well-being.
Advanced athletes wanting ECG, temperature, or swimming analytics may want to look elsewhere. Similarly, users who need deep app ecosystems should consider higher-end models with Wear OS.
Frequently Asked Questions
- Does this model support Bluetooth calls and voice assistants?
Yes, it supports Bluetooth calls with noise reduction and AI-powered voice assistance, plus ChatGPT integration on compatible Nothing smartphones. - What makes the heart rate tracking more accurate than other devices?
This tool uses a new 4-channel sensor for more reliable readings versus older fitness tracker models, performing closely to leading devices in its price range. - Can the smart watch be used while swimming?
While it features IP68 waterproofing, it’s designed for sweat and water splashes, not deep water or swim analytics. For full swim tracking, look for swim-specific wearables. - How much battery life does it offer with all features active?
The smart watch delivers up to 13 days of normal use, or 4-5 days with Always-On Display and continuous GPS tracking, which is exceptional for this price class. - How does this device compare to the Nothing Watch 2 or Amazfit GTS 4?
In recent reviews, the smart watch ranks above similar-priced competitors for GPS precision and ease of use (see in-depth analysis), making it a top-tier wearable in 2026.
In summary, if you want the best balance of value, design, battery life, and core features, the smart watch from CMF BY NOTHING stands out as the most compelling choice in 2026. Click here to check current prices and get yours today.
