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Nothing CMF Buds 2 vs Tronsmart Onyx Pure: which should you buy?

On aggregated review scores the Nothing CMF Buds 2 comes out ahead with a HearWiki score of 82. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: Nothing CMF Buds 2 - Outstanding overall at around $37.

Score breakdown

Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.

Nothing CMF Buds 2 leads on 6 of 7 measures.

  • Nothing CMF Buds 2
  • Tronsmart Onyx Pure
HearWiki score
82
61
Sound
7.7
5.9
Noise cancelling
7.8
-
Battery
8.8
6.6
Calls
6.5
4.7
Value
9.4
-
Price (USD)
$37
$20

Generation & platform

The scores rank quality. This is the other question: is the newer one actually newer technology, or the same platform in a new shell?

New platform

Nothing CMF Buds 2 (2025) against Tronsmart Onyx Pure (2022). The Nothing CMF Buds 2 is the newer platform here: Bluetooth 5.4 against 5.3 and ANC type Hybrid against None. It also adds Multipoint pairing, Wear detection, Transparency mode and Companion app.

  • CMF Buds 220253 yr newer
  • Onyx Pure2022
What differsCMF Buds 2Onyx Pure

Platform

Bluetooth
5.4
5.3
ANC type
Hybrid
None

Everyday features

Multipoint pairing
Yes
No
Wear detection
Yes
No
Transparency mode
Yes
No
Companion app
Yes
No
Water resistance
IP55
IPX5

Level on: Top codec, USB-C, Custom EQ.

Specifications

CMF Buds 2Onyx Pure
Type
True Wireless
True Wireless
Price (USD)
$37
$20
HearWiki score
82
61
Released
2025
2022
Availability
Sold new
Discontinued
Driver
11 mm driver
2-driver hybrid
Driver type
dynamic
hybrid
Driver size
11 mm
10 mm
Drivers per side
1
2
Frequency response
20 Hz - 20 kHz
20 Hz - 20 kHz
Impedance
-
32 Ω
Bluetooth
5.4
5.3
Codecs
SBC, AAC
SBC, AAC
Multipoint pairing
Yes
No
Latency
110 ms
30 ms
Wireless range
10 m
10 m
Battery life
13.5 h
7 h
Battery life (ANC on)
7.5 h
-
Battery incl. case
55 h
32 h
Full charge time
93 min
90 min
Quick charge
10 min → 4 h
-
Wireless charging
No
No
Active noise cancelling
Yes
No
ANC type
hybrid
none
Transparency mode
Yes
No
Companion app
Yes
No
Custom EQ
Yes
Yes
Wear detection
Yes
No
Controls
touch
touch
Voice assistant
Yes
Cortana, Google Assistant, Siri
Weight
4.5 g
38 g
Case weight
41.5 g
-
Water resistance
IP55
IPX5
USB-C
Yes
Yes
Microphones
6
2

What reviewers said

Nothing CMF Buds 2

The Nothing CMF Buds 2 are an exceptional budget true-wireless option, packing a surprisingly rich feature set for their low price. They deliver engaging sound, robust battery life, and effective hybrid ANC, making them a top-value pick for most listeners.

  • Pro:Excellent value for the price
  • Pro:Strong battery life with ANC off
  • Pro:Effective hybrid active noise cancellation
  • Con:Call performance weak in noisy settings
  • Con:ANC and gaming latency not class-leading
  • Con:No wireless charging support

Tronsmart Onyx Pure

The Tronsmart Onyx Pure are budget-friendly true wireless earbuds with a compact, comfortable design and a lively, bass-forward sound signature that suits casual listening. They offer solid battery life, touch controls, and a built-in EQ with three presets, though they lack advanced features like ANC or app support. Overall, they deliver strong value for the price, especially for those who prioritize energetic audio and simplicity.

  • Pro:Energetic, punchy sound with strong mid-bass
  • Pro:Comfortable and secure fit for daily use
  • Pro:Good battery life with 7 hours per charge
  • Con:Lacks active noise cancellation and app support
  • Con:Touch controls can be inconsistent
  • Con:Call quality is average at best

Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.

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New comparisonNothing CMF Buds 2Tronsmart Onyx Pure