CMF Buds 2 are budget wireless earbuds with punchy bass, hybrid ANC, and up to 55 hours of battery life with the charging case.
What Are CMF Buds 2?
CMF Buds 2 are true wireless earbuds from CMF by Nothing, a brand that focuses on clean design and aggressive pricing. They sit in the middle of the CMF line, above the older Buds and below the Buds 2 Plus and Buds Pro 2. The aim is simple: give you long battery life, punchy sound, and modern extras like hybrid active noise cancelling without a flagship price tag.
The earbuds use 11 mm PMI dynamic drivers tuned with Dirac Opteo processing, offer hybrid ANC rated up to 48 dB, and pair over Bluetooth 5.4 with Google Fast Pair and Microsoft Swift Pair available. You also get IP55 resistance on the buds, an IPX2 case, dual connection, low-latency mode, and deep integration with the Nothing X app for tuning sound and controls.
CMF Buds 2 Specs At A Glance
If you just want the short spec rundown before digging into details, this table lays out the hardware basics you care about for daily use.
| Feature | CMF Buds 2 |
|---|---|
| Driver | 11 mm PMI dynamic driver with Dirac tuning |
| Noise cancelling | Hybrid ANC up to 48 dB with transparency and off modes |
| Microphones | Three mics per earbud (six total) with Clear Voice Technology 3.0 |
| Battery life | Up to 13.5 hours (ANC off) per charge, 55 hours with case, 7.5 hours from 10 minutes of top-up |
| Connectivity | Bluetooth 5.4 with dual connection, low-lag gaming mode, Fast Pair and Swift Pair |
| Codecs | SBC and AAC |
| Water resistance | IP55 on buds, IPX2 case |
| Colours | Light Green, Dark Grey, Orange |
| Price range | Around 60 USD / 40 GBP at launch, often lower during sales |
For the most accurate, region-specific numbers and disclaimers, check the official CMF Buds 2 product page.
Design, Comfort And Build Quality
CMF Buds 2 keep the square case with rounded edges that has become a CMF signature. The case feels compact enough for a jeans pocket and has a translucent dial element in the top corner. On Buds 2 that dial is mostly visual, with small holes that let you thread a lanyard if you like. A USB-C port sits on the side and a small LED on the front shows charging and pairing status.
Flip the lid and you see the earbuds resting in moulded wells with pogo-pin contacts. Each earbud has a short stem and a rounded body that sits in the ear canal with silicone tips. CMF includes three tip sizes in the box. With the right tips the buds lock in securely enough for a run or gym session without creating painful pressure points.
The buds weigh around 4.5 g each and the case around 40 g, so the whole package feels light in hand and in ear. The buds carry an IP55 rating against dust and water, which handles sweat and light rain; the case is IPX2, so it tolerates light splashes but should not be soaked. That mix makes CMF Buds 2 easy to carry all day, then drop straight into workout duty.
Everyday Usability Details
Small touches round out the hardware experience. The hinge has a reassuring snap when you open or close the lid. Magnets guide each earbud into place, so you rarely need to fiddle to line up contacts. The pairing button is inside the case between the buds, which keeps the exterior clean while still letting you reset or pair to new devices without tools.
Colour options also matter more than spec sheets suggest. The Light Green finish stands out on a desk or in a gym bag, while Dark Grey hides scuffs and dust better and Orange goes loud on purpose. If you care about how the case looks after months of use, Dark Grey is the safer pick.
Sound Quality And Noise Cancelling
The tuning of CMF Buds 2 leans toward a bass-forward profile. Out of the box you get lifted low-end that adds punch to hip-hop, pop, and electronic tracks. Mids stay present enough for podcasts and vocals, while treble rolls off slightly to keep cymbals from turning harsh. It is a fun, energetic sound that casual listeners often prefer over a flat studio curve.
The 11 mm PMI driver and Dirac Opteo tuning give you solid instrument separation for the price. Imaging remains clear enough to place drums and guitars in the stereo field, and detail levels stay respectable during busy sections. You will not confuse CMF Buds 2 with high-end in-ears, but at this price level the combination of bass weight and clarity is impressive.
Adjusting The Sound In The App
Nothing ships CMF Buds 2 with several equaliser presets and a custom curve inside the free Nothing X app. Presets such as Enhance Vocals or Pop pull back the bass bump and lift mids, which suits audiobooks or acoustic music. You can also tweak a manual EQ curve if you prefer a leaner sound or want to bring treble back up for extra detail.
Ultra Bass mode stacks more low-end gain on top of the main profile. This works for gym playlists and action films, though at higher levels it can mask some midrange detail. For most listeners a light dose of Ultra Bass plus a subtle EQ change hits the sweet spot.
Hybrid ANC And Transparency
CMF rates the hybrid ANC system at up to 48 dB of reduction with a range that reaches around 5200 Hz. In real use that translates to a clear cut in constant rumbles such as train noise, air-conditioning, bus engines, and office hum. Voices still come through, yet they drop to a softer murmur that music can easily mask at moderate volume.
The earbuds offer several ANC levels plus an adaptive setting that reacts to your surroundings. You can switch between ANC, transparency, and off either through stem gestures or in the app. Transparency mode does an adequate job of piping outside sound back in for announcements or quick chats, though it boosts high-frequency hiss slightly on loud city streets.
Fit still matters. If the tips are too small you will hear more low-frequency rumble no matter what the ANC circuit does. Spending a few minutes swapping tips and running the app’s fit test pays off in quieter commutes and better bass performance.
Connectivity, Controls And Smart Features
On the wireless side, CMF Buds 2 use Bluetooth 5.4. That brings stable links, lower power draw, and low latency options when combined with Nothing phones. In daily use, reviewers have reported reliable connections across apartments or offices, and only brief cutouts in crowded transport hubs where radio interference is heavy.
Pairing is straightforward. Open the case near an Android phone and Fast Pair prompts appear, while Windows laptops can use Swift Pair. You can also hold the case button until the LED flashes to enter manual pairing for TVs, game consoles, and older devices. Dual connection lets you link, such as a laptop and phone at the same time and jump between them without digging into settings.
Touch Controls And Customisation
Each stem has touch areas that respond to double-tap, triple-tap, tap-and-hold, and double-tap-and-hold gestures. By default these handle play and pause, track skips, ANC toggling, and calls. Inside Nothing X you can remap actions to volume changes, voice assistant triggers, or mode switching, and you can turn off any gesture that leads to accidental presses.
The touch sensors can misread commands on occasion, especially if you try to tap while walking briskly or adjusting the fit. After a few days you learn the timing and pressure that work best, and disabling gestures you rarely use cuts down on stray triggers.
Nothing X App And Extra Tricks
Nothing X is where CMF Buds 2 feel far more capable than their price tag. Beyond EQ and ANC settings, the app gives you spatial audio toggles, toggleable low-lag mode, tip fit tests, firmware updates, and a simple battery readout for each earbud and the case. Owners of recent Nothing phones also get tighter lock-screen widgets and deeper shortcuts.
There is another perk if you use a recent Nothing phone with advanced shortcuts: you can map gestures on the buds to trigger voice tools such as ChatGPT so that holding an earbud launches a prompt window on the phone. It is not mandatory to use, yet for heavy chat-AI users this turns the buds into an audio remote for quick queries.
Battery Life And Charging
Battery life is one of the main selling points for CMF Buds 2. CMF quotes up to 13.5 hours of playback from the earbuds alone with ANC off and around 7.5 hours with ANC active. Real-world testing from independent reviewers lands slightly below those peaks but still reports around ten hours without ANC and around six-and-a-half hours with ANC, which is excellent in this price class.
The case extends total playback to a quoted 55 hours with ANC off and just over 30 hours with ANC on. In practice that means many users can run through a full workweek of commuting and office listening without seeing a low-battery warning, as long as they dock the buds in the case between sessions.
Fast Charging Behaviour
CMF Buds 2 also lean hard on fast charging. A ten-minute top-up inside the case can deliver around 7.5 hours of listening with ANC off, which turns a quick coffee break into enough charge for a cross-country flight. From empty, the case takes roughly an hour to refuel over USB-C with a 5 V, 1 A or higher charger.
To preserve long-term battery health, avoid leaving the case on a charger constantly and try not to drain both buds and case to zero every time. Lithium cells last longer when kept between roughly 20 percent and 80 percent for day-to-day use, with deep discharges reserved for the occasional reset.
CMF Buds 2 In The Wider CMF Lineup
CMF now sells several closely named earbuds: Buds 2, Buds 2 Plus, Buds 2a, and Buds Pro 2. That can get confusing, so it helps to place CMF Buds 2 in context before you buy.
- Compared With Buds 2 Plus — Buds 2 Plus offer LDAC for high-resolution audio and slightly longer overall battery figures, which appeal to listeners who care about streaming quality above all else. Buds 2, in contrast, lean into long single-charge stamina and ANC value at a lower price.
- Compared With Buds Pro 2 — Buds Pro 2 add stronger ANC numbers, Hi-Res certification, and an even richer feature set, along with a higher launch price. If you want CMF’s most advanced feature list and do not mind spending more, they stay tempting, yet CMF Buds 2 hold their own on battery life and day-to-day comfort.
- Compared With Buds 2a — Buds 2a trim many extras to hit a lower tag. CMF Buds 2 land in a sweet middle spot: more ANC power, clearer microphones, and nicer materials than the entry model, while still keeping costs far below big-brand flagships.
If you value strong ANC, long single-charge life, and a fun, bass-tilted sound, CMF Buds 2 often end up as the most balanced pick of the range for typical smartphone owners.
Pros, Limitations And Buying Advice
To close things out, here is how CMF Buds 2 stack up once you look past spec sheets and price tags and think about how they feel to live with every day.
What CMF Buds 2 Do Well
- Deliver Long Listening Sessions — Multi-day life from the earbuds and case means less routine charging and fewer random dropouts from low batteries.
- Handle Noisy Spaces — Hybrid ANC keeps constant rumbles under control on trains, planes, and busy streets, especially once you dial in a snug tip fit.
- Offer Bass-Rich, Lively Sound — Stock tuning leans warm and punchy, which suits chart music and gaming without needing manual EQ tweaks.
- Give You Strong App Control — Nothing X offers ANC modes, EQ presets, custom curves, fit tests, and firmware updates in one clean dashboard.
- Work Smoothly With Multiple Devices — Dual connection, Fast Pair, and Swift Pair together save time when you hop between phone, tablet, and laptop.
- Stay Comfortable For Long Stretches — Light shells, balanced stems, and three tip sizes help you wear them for hours with little fatigue.
Where CMF Buds 2 Fall Short
- Controls Can Feel Finicky — Touch surfaces sometimes miss taps or register extras, especially while running or adjusting the fit on the move.
- Bass Can Overpower Detail — Listeners who prefer neutral sound may find the default low-end boost too strong until they spend time tuning EQ.
- No Advanced Codecs — With only SBC and AAC on offer, audio nerds looking for LDAC or aptX will gravitate toward Buds 2 Plus or other rivals.
- Case Durability Feels Modest — The glossy dial and lighter colours pick up marks faster than darker finishes, so careful handling helps.
Who Should Buy CMF Buds 2?
CMF Buds 2 make the most sense if you want strong battery life, better-than-average ANC for the price, and a bass-forward sound signature that works for mainstream music and everyday streaming. They shine for students, commuters, and office workers who need one pair of buds that can handle podcasts, playlists, and meetings without constant charging breaks.
If you own a Nothing phone, CMF Buds 2 become even more appealing thanks to tight system-level integration, low-lag gaming mode, and extras such as ChatGPT gesture triggers. You still get an excellent experience on other Android phones and iPhones, as long as you install Nothing X for updates and control.
Pick something else if you crave a neutral tuning above all else or you care a lot about lossless or hi-res streaming codecs. In that case, CMF Buds 2 Plus or rivals from traditional audio brands might fit your ears and habits better. For everyone else who wants fun sound, flexible controls, and week-long stamina at a sharp price, CMF Buds 2 are hard to ignore.