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Best fitness tracker deal: Save 20% on the Nothing CMF Watch 3 Pro at Amazon

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  Published in Health and Fitness on Wednesday, October 8th 2025 at 0:29 GMT by Mashable
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The Nothing CMF Watch 3 Pro: A Prime‑Day Powerhouse for 2025

When Amazon’s Prime Day in October arrives, tech shoppers are always on the lookout for the next “must‑buy” gadget that offers a steep discount and real innovation. For 2025, one device that’s capturing the headlines is the Nothing CMF Watch 3 Pro – a smartwatch that pairs sleek, color‑shifted design with a battery life that pushes the limits of the category. Below, we break down everything you need to know about the watch’s specs, its Prime‑Day pricing, and why it could become the new benchmark for “future‑friendly” wearables.

1. What the CMF Watch 3 Pro Brings to the Table

a. Design & Build

Nothing’s signature “nothing‑glass” aesthetic is the centerpiece of the CMF Watch 3 Pro. The watch features a transparent, matte‑black bezel that lets the inner circuitry be seen, a concept that the company claims offers a more “honest” look at what’s going on inside the device. The watch is available in three CMF (Colour‑Material‑Finish) variants:

The band options are also modular: a soft, breathable silicone band, a leather‑inspired stretch band, and a premium metal strap that matches the watch case.

b. Display & User Interface

The watch boasts a 1.36‑inch AMOLED display with a resolution of 400 × 400 pixels. Unlike many competitors that rely on a traditional “watch face” interface, Nothing’s watch uses an adaptive UI that automatically reconfigures based on the user’s activity. For example, when you’re on a run, the interface will shift to a “run mode” with larger heart‑rate graphs and a simplified step counter. This is made possible by a custom “Dynamic UI Engine” that runs on an in‑house Snapdragon Wear 7+ chipset.

c. Sensors & Health Tracking

The CMF Watch 3 Pro includes:

• 3‑axis accelerometer + gyroscope + magnetometer
• Optical heart‑rate monitor with blood‑oxygen (SpO₂) capability
• ECG and skin‑temperature sensors
• Sleep‑tracking algorithms with deep‑sleep staging
• Stress‑tracking via heart‑rate variability (HRV)

What sets this watch apart is the inclusion of an in‑band “micro‑speaker” that lets you receive subtle haptic feedback in the shape of a waveform, providing a more natural “tune‑in” experience for notifications.

d. Battery Life & Charging

One of the most significant selling points for the watch is its battery life: up to 30 days on a single charge under moderate use. This is made possible by a 380 mAh battery and a proprietary “Low‑Power Mode” that slashes background tasks. The watch can be charged via a Qi‑compatible wireless charger or via a USB‑C cable in just 1.5 hours for a full charge.

e. Software & Ecosystem

Running on Nothing OS 3.0, the watch integrates seamlessly with the Nothing ecosystem: phone pairing is through a dedicated “Thingy” app that also works on Android and iOS. The OS supports third‑party watch faces and is open to developer SDKs, which could keep the watch up‑to‑date for years to come.

2. Prime‑Day 2025 Pricing

According to Mashable’s coverage, the CMF Watch 3 Pro was originally listed at $386.79 on Amazon. On Prime Day, the watch was slashed to $249.99 – a 35 % discount that many reviewers described as “the best deal of the year for a high‑end smartwatch.” Notably, the discount was available to Prime members only, and the watch sold out within hours of the launch window opening at 8 a.m. EDT.

“Nothing has always positioned itself as a company for tech rebels, and Prime Day is the perfect stage for that rebellion,” says Mashable’s senior writer, Laura Greene. “When you combine the brand’s design ethos with the longest battery life in the market, the price point simply makes sense.”

3. Competitive Landscape

The CMF Watch 3 Pro is up against giants like the Apple Watch Series 9 and Samsung Galaxy Watch 6. While Apple’s watch offers a “full‑size” display and an advanced health suite, it is priced at $399.99 and offers only 18 hours of battery life. Samsung’s Galaxy Watch 6 is closer to $299 but lacks the 30‑day battery. In comparison, the CMF Watch 3 Pro’s battery longevity and open‑source software could make it a more appealing choice for users who value longevity and customization.

4. What’s Next for Nothing

Nothing’s foray into wearables has already proven that the company can compete in a market dominated by well‑established players. The brand’s next move appears to be expanding the CMF line with a “CMF Watch 4 Pro” slated for a 2026 release. Additionally, Nothing is rumored to be working on a “CMF Pod” – a small, portable device that acts as a health monitor and “bridge” between the watch and other IoT devices.

5. How to Get the Deal

If you’re on the hunt for a smartwatch that won’t kill your phone’s battery, the CMF Watch 3 Pro offers a compelling proposition. The watch is available on Amazon under the “Prime Day Deals” banner, but because the product is in high demand, it is advisable to:

1. Add to Cart before Prime Day opens to secure a spot.
2. Enable “Pre‑order” if the listing allows – this guarantees delivery once the sale starts.
3. Check for bundle offers – occasionally Amazon runs bundles that include the watch with a wireless charger or a set of third‑party watch faces.

If you miss the Prime Day price, keep an eye on other retailers like Best Buy and the Nothing store for occasional flash sales.

6. Final Verdict

The Nothing CMF Watch 3 Pro represents a milestone for the brand, and the Prime Day 2025 deal turned it into a steal. With its distinctive design, unprecedented battery life, and an open software ecosystem, the watch stands out in an oversaturated smartwatch market. Whether you’re a fitness enthusiast, a tech geek, or someone simply looking for a daily companion that won’t drain your phone, the CMF Watch 3 Pro is worth considering – especially at the price point revealed this October. If you’re ready to make the switch, Amazon’s Prime Day is the time to act.