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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want studio-grade codecs and marathon battery life, choose CMF BY NOTHING Buds 2; if you need a touchscreen charging case that controls playback without your phone, choose Bucephalus Earbuds.
• CMF BY NOTHING Buds 2 — biggest strength: LDAC-certified 12mm LCP drivers with Audiodo personalized hearing calibration, plus up to 61.5 hours of total playback and a 10-minute flash charge for 8.5 hours. That is an audio-first package.
• CMF BY NOTHING Buds 2 — biggest trade-off: The deepest software features (ChatGPT voice assistant, 40ms low-latency mode) are tied to Nothing phones, and the case is bulkier at 5.3cm across and 42.5g.
• Bucephalus Earbuds — biggest strength: A smart touchscreen case that handles volume, track skipping, calls, earbud locating, mode switching and even a camera remote — no app, no phone.
• Bucephalus Earbuds — biggest trade-off: 48 hours total with 6 hours per charge is respectable but well short of the CMF set, and it tops out at Bluetooth 5.4 with a 60ms latency figure and no high-resolution codec listed.
• Who each is for: CMF BY NOTHING Buds 2 suits listeners who care about sound quality, adaptive ANC and long trips. Bucephalus Earbuds suit people who hate digging their phone out of a pocket.
The CMF BY NOTHING Buds 2 is built around sound. The headline hardware is a 12mm LCP dynamic driver that carries LDAC certification, and it is paired with Audiodo personalized hearing calibration — a five-frequency hearing test that builds a "DNA-matched" audio profile for your ears. In my opinion, that combination is the single most interesting thing on this spec sheet, because it addresses the real problem with earbuds: everyone's hearing and ear canal shape differ, so a flat tuning sounds different to you than to me. Smart Adaptive ANC rated at 50dB adjusts to your surroundings and compensates for a poor ear seal, which the specs say blocks roughly three times more high-frequency noise than standard ANC.
Build-wise you get an IP55 rating, a shock-absorbent polymer and sandblasted metal finish, and an in-ear bud shape that should stay put during runs. Bluetooth 5.4 gives a 10-meter range, and dual-device pairing keeps a laptop and phone connected at once.
Who should buy it: Android users who want LDAC, anyone who wants personalized sound calibration, and long-haul travellers who hate charging. Who should skip it: iPhone owners who want the full feature set — the low-latency 40ms mode and ChatGPT voice assistant are exclusive to Nothing phones — and anyone who wants a small case, since this one measures 5.3cm by 5.3cm by 2.3cm.
Bucephalus Earbuds: Who It's For
The Bucephalus Earbuds sell a completely different idea: control. The charging case has a built-in touchscreen, and from it you can change volume, skip tracks, answer calls, locate a missing earbud, switch listening modes, and trigger your phone's camera shutter. That last one is a small feature that quietly matters — a remote shutter for group photos or tripod shots is something most earbuds simply cannot do. If you have ever been mid-run, mid-cook or mid-drive and had to fish your phone out just to lower the volume, the appeal is obvious.
Audio is handled by 13mm dynamic drivers, a larger driver size than the CMF set on paper, and Bucephalus pairs it with five EQ modes — Bass, Rock, Pop, Classical and Jazz. That is a preset-based approach rather than a calibration-based one, which is simpler and more immediate: you tap a mode and the sound changes. ANC handles background noise and ENC (environmental noise cancellation) is aimed at your voice on calls rather than what you hear.
Battery is quoted at up to 6 hours per charge and up to 48 hours with the case, with a 2-hour charge time. Bluetooth 5.4 is here too, with a stated range of 33 feet — roughly 10 meters — and a 60ms latency figure. The earbuds themselves are extremely light at 5.67g, and the case weighs 1.8 ounces, so this is a genuinely pocketable kit. The white buds with a black case is a distinct look, and the ergonomic in-ear shape is aimed at workouts, commuting and desk work.
Side-by-Side: Which Should You Choose?
• Best for sound quality and codec support → CMF BY NOTHING Buds 2. LDAC certification plus Audiodo calibration is a stronger audio story than preset EQ modes.
• Best for battery life → CMF BY NOTHING Buds 2. Up to 61.5 hours total and 8.5 hours from a 10-minute charge versus 48 hours total and 6 hours per charge.
• Best for phone-free control → Bucephalus Earbuds. The touchscreen case does volume, tracks, calls, modes, earbud locating and camera shutter.
• Best for preserving your hearing profile → CMF BY NOTHING Buds 2. The five-frequency hearing test builds a personal audio profile, which the Bucephalus set does not offer.
• Best for simple, quick tuning → Bucephalus Earbuds. Five named EQ presets are easier to use on the fly than a calibration routine.
• Best for rough outdoor use → CMF BY NOTHING Buds 2. IP55 plus a shock-absorbent polymer and metal finish is the more explicitly rugged build.
• Best for travel and packing light → Bucephalus Earbuds. The case is noticeably smaller and lighter, and the buds themselves weigh just 5.67g.
• Best for iPhone owners → Bucephalus Earbuds. CMF's low-latency mode and ChatGPT assistant are limited to Nothing phones, so iPhone users do not get the full software set.
I would buy the CMF BY NOTHING Buds 2. In my opinion, the combination of LDAC-certified 12mm drivers, personalized hearing calibration, adaptive 50dB ANC and 61.5-hour battery covers more of what actually matters day to day than a touchscreen case does. The Bucephalus Earbuds are the smarter pick if you specifically want to leave your phone in your pocket, and the touchscreen case is a genuinely clever piece of design. But if audio quality and endurance are your priorities, the CMF set wins this one for me.
On paper, CMF has the more elaborate calling setup: six microphones with Clear Voice 3.0 and Wind Noise Reduction 3.0, aimed at windy and crowded environments. Bucephalus relies on ENC for voice clarity, which is a simpler approach. For outdoor calls, I would lean CMF.
Yes. They use Bluetooth 5.4 and are listed as compatible with iPhone, Android, tablets and other Bluetooth devices. The CMF Buds 2 also work with both, but some of its advanced features — the 40ms low-latency mode and the ChatGPT voice assistant — are exclusive to Nothing phones.
CMF BY NOTHING Buds 2, clearly. It is rated up to 61.5 hours total with a 10-minute charge delivering 8.5 hours. Bucephalus is rated up to 48 hours total with about 6 hours per charge and a 2-hour charge time.
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