If you want immersive, long-haul over-ear listening with premium audio codecs and massive battery endurance for the gym or travel, choose CMF BY NOTHING Headphone Pro Active; if you need secure, sweat-proof in-ear isolation with a unique touch-screen interface and rapid charging for intense workouts, choose Thunelec Earbuds.
• CMF BY NOTHING Headphone Pro Active: Delivers Hi-Res LDAC audio, 50 hours of ANC playtime, and plush comfort for all-day wear, but it is bulky and lacks true waterproofing for heavy sweat.
• Thunelec Earbuds: Offers IPX7 sweat resistance, a 45dB noise cancellation system, and a custom full-color touch screen on the case, though its smaller drivers and shorter single-charge life limit deep immersion.
• The Verdict: Pick the CMF headphones if your priority is sound fidelity and marathon sessions; pick the Thunelec earbuds if you demand rugged durability and a hands-free control experience during high-intensity movement.
This product is designed for the listener who treats music as a destination rather than background noise. The headline feature here is the commitment to audio quality that goes beyond standard streaming. With Dual Hi-Res Certification and support for LDAC, this headset pushes significantly more data than typical Bluetooth connections, allowing for richer textures in layered instrumentals and punchier bass without sacrificing clarity. The inclusion of a customized 40mm dynamic driver is not just marketing fluff; it translates to a soundstage that feels wider and more detailed, making it an ideal choice for those who listen to complex jazz, classical, or high-fidelity pop tracks while trying to focus.
For the user spending hours in a busy office or on a long commute, the Adaptive Active Noise Cancellation (ANC) provides up to 40 dB of silence. This level of reduction effectively drowns out the rumble of train engines or the chatter of a crowded coffee shop, creating a personal sanctuary. The design prioritizes comfort above all else, utilizing memory foam earpads and a cap-friendly headband that prevents pressure points. You can wear these for a podcast marathon or a flight across continents without the fatigue that plagues cheaper over-ear models. The battery life is equally impressive, offering up to 50 hours with ANC enabled, which means you might only need to charge them once every two weeks of daily use.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-24 · 7 min read · Independent comparison
However, this device is not built for everyone. Its form factor is inherently large and over-ear, which makes it cumbersome for running, weightlifting, or any activity where you are moving vigorously. While it handles casual moisture well, it does not carry an IPX7 rating, meaning heavy sweat or rain could damage the internal electronics. If your primary use case involves the gym, especially for high-intensity interval training where sweat is constant, this headphone's lack of waterproofing is a significant trade-off. Additionally, the reliance on a companion app for customization like the Personal Sound Profile and Spatial Audio means you cannot adjust these settings directly from the device itself without unlocking your phone.
The Thunelec U9 earbuds are engineered specifically for the active lifestyle. If you are looking for best ipx7 waterproof earbuds for gym sessions, this is the clear contender. The IPX7 nano-waterproof coating ensures that the earbuds can withstand submersion in water, making them completely immune to the rigors of intense sweating, sudden downpours, or even accidental drops in a puddle. This durability allows you to push your limits without worrying about the device failing due to moisture ingress. The ergonomic design features three sizes of soft silicone tips, ensuring a snug, non-slip fit that stays secure whether you are sprinting, lifting weights, or doing yoga.
What sets these apart technically is the integration of a full-color touch screen on the charging case. This is a rare feature that eliminates the need to fumble with phone apps or physical buttons to change EQ modes, check battery levels, or toggle noise cancellation. You can swipe through five distinct EQ presets—standard, classic, jazz, rock, and pop—to tailor the sound to your specific genre preference instantly. The 14.2mm bio-carbon fiber dynamic coils deliver deep bass down to 50Hz, providing a thumping rhythm that motivates during cardio. Furthermore, the 45dB Active Noise Cancellation combined with Environmental Noise Cancellation (ENC) ensures that you hear your music clearly while blocking out gym machinery, and your voice comes through sharply during calls, suppressing static and background noise.
Despite their strengths, there are limitations to consider. The total battery life of 48 hours includes the case, but the earbuds themselves offer only 6 to 8 hours of continuous playback. This is sufficient for most days but requires recharging mid-week if you are a heavy user. The audio frequency range tops out at 5kHz, which is narrower than the CMF's 40kHz capability, meaning the absolute high-frequency detail may feel slightly less airy compared to high-end over-ear options. Additionally, the touch controls do not include direct volume adjustment, requiring you to reach for your connected device to change the volume, which can be a minor inconvenience when you are already in motion.
• Best for battery life → CMF BY NOTHING Headphone Pro Active: With 50 hours of continuous ANC playtime, you will rarely need to plug it in, whereas the Thunelec requires charging every few days of heavy use.
• Best for gym durability → Thunelec Earbuds: The IPX7 rating makes them sweat-proof and water-resistant, a critical advantage for anyone working out intensely, while the CMF lacks this protection.
• Best for audio fidelity → CMF BY NOTHING Headphone Pro Active: LDAC support and Hi-Res certification provide a wider frequency range (up to 40kHz) and higher data throughput than the Thunelec's standard Bluetooth profile.
• Best for intuitive controls → Thunelec Earbuds: The full-color touch screen on the case offers a tactile, visual way to manage settings and EQ without pulling out your phone.
• Best for comfort on long flights → CMF BY NOTHING Headphone Pro Active: Memory foam earpads and an over-ear design distribute weight better than in-ear buds for extended periods.
• Best for call clarity in noisy environments → Thunelec Earbuds: The dedicated ENC technology is specifically tuned to isolate vocals and suppress traffic noise for crystal-clear conversations.
• Best for fast charging → Thunelec Earbuds: A 1.5-hour full charge time is faster than the CMF's 5-minute quick charge (which only yields 4 hours), but the Thunelec's total capacity is lower.
• Best for multipoint gaming headset for gym scenarios → Thunelec Earbuds: While both use Bluetooth 5.4, the secure in-ear fit and transparency mode make the Thunelec safer and more practical for outdoor or gym awareness.
In my opinion, the CMF BY NOTHING Headphone Pro Active is the superior choice for general audio enjoyment, offering a premium listening experience with superior battery life and Hi-Res capabilities that justify its larger footprint. However, for the specific context of for gym use, I would personally buy the Thunelec Earbuds. The combination of IPX7 waterproofing, a secure fit that won't fall out during movement, and the convenience of a touch-screen case makes it the only logical choice for high-intensity training. If your primary goal is to run, lift, or cycle without worrying about sweat damage or losing your audio gear, the Thunelec delivers exactly what you need.
While "best" is subjective, the Thunelec Earbuds meet the strict IPX7 waterproof standard, making them highly suitable for heavy sweating and rain, whereas the CMF headphones do not have this rating.
The CMF headphones support Bluetooth 5.4 and are compatible with iOS and Android devices via Fast Pair, but they are over-ear designs that may shift during vigorous activity, unlike the secure fit of in-ear options.
The CMF headphones offer a wider frequency response (up to 40kHz) and LDAC support for high-resolution audio, while the Thunelec focuses on deep bass (down to 50Hz) with customizable EQ modes tailored for different genres.
The CMF BY NOTHING Headphone Pro Active lasts up to 50 hours with ANC on, significantly outlasting the Thunelec Earbuds, which provide 6-8 hours per charge from the buds alone.
• KOUJAON Earbud Case Headphone vs Aircawin Bose
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.