True Wireless
Nothing CMF Buds 2a
78Great
$42
Full review dataNothing CMF Buds 2a vs UGREEN CM338 TWS: which should you buy?
On aggregated review scores the Nothing CMF Buds 2a comes out ahead with an HearWiki score of 78. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: Nothing CMF Buds 2a - Great overall at around $42.
True Wireless
UGREEN CM338 TWS
62Average
$25
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
Nothing CMF Buds 2a
Sound8.0
Noise cancelling7.5
Battery7.0
Calls6.5
Value9.0
UGREEN CM338 TWS
Sound7.0
Battery4.0
Calls5.0
Value7.0
Specifications
| Spec | Nothing CMF Buds 2a | UGREEN CM338 TWS |
|---|---|---|
| Type | True Wireless | True Wireless |
| Price (USD) | $42 | $25 |
| HearWiki score | 78 / 100 · Great | 62 / 100 · Average |
| Released | 2024 | 2020 |
| Audio | ||
| Driver | 12.4mm Bio-fibre | dynamic |
| Driver size | 12.4 mm | - |
| Drivers per side | 2 | 2 |
| Frequency response | 20Hz-20kHz | 20Hz-20kHz |
| Impedance | - | 16 Ω |
| Sensitivity | - | 91 dB/mW |
| Wireless | ||
| Bluetooth | 5.4 | 5.0 |
| Bluetooth version | 5.4 | 5.0 |
| Codecs | AAC, SBC | SBC, AAC |
| Multipoint pairing | Yes | No |
| Wireless range | - | 10 m |
| Battery | ||
| Battery life | 8 h | 3 h |
| Battery life (ANC on) | 5 h | - |
| Battery incl. case | 35.5 h | - |
| Full charge time | 89 min | 60 min |
| Quick charge | 10 min = 5.5 h | - |
| Wireless charging | No | No |
| Features | ||
| Active noise cancelling | Yes | - |
| ANC type | feedforward | - |
| Transparency mode | Yes | - |
| Companion app | Yes | - |
| Custom EQ | Yes | - |
| Wear detection | No | - |
| Controls | touch | touch |
| Voice assistant | Yes | - |
| Design | ||
| Weight | 4.28 g | - |
| Case weight | 42.75 g | - |
| Water resistance | IP54 | IPX4 |
| USB-C | Yes | - |
| Calls | ||
| Microphones | 4 | 1 |
What reviewers said
Nothing CMF Buds 2a
The Nothing CMF Buds 2a deliver a compelling mix of solid audio performance, adaptive noise cancellation, and long battery life at a very accessible price point. They are a practical pick for budget-conscious listeners who want reliable everyday earbuds with app-based customization, though they come with some expected trade-offs in materials and features.
- Pro:Strong value for the price
- Pro:Adaptive ANC with 42 dB reduction
- Pro:Good battery life with case
- Con:Plasticky build quality
- Con:No in-ear detection
- Con:Limited codec support (AAC, SBC)
UGREEN CM338 TWS
The UGREEN CM338 TWS offers a compact charging case and enjoyable audio at a budget-friendly price. While its sound quality is a standout for the cost, it falls short in call clarity, pairing reliability, and video sync, making it a decent but not flawless pick for everyday use.
- Pro:Compact and portable case
- Pro:Pleasant sound signature for the price
- Pro:Affordable price point
- Con:Mediocre call quality
- Con:Pairing can be finicky
- Con:Noticeable audio lag during video playback
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
Compare something else
Swap either side out, or start again from the picker.