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Nothing CMF Buds 2 vs Tronsmart Sounfii NC 2: 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 5 of 7 measures.

  • Nothing CMF Buds 2
  • Tronsmart Sounfii NC 2
HearWiki score
82
74
Sound
7.7
7.3
Noise cancelling
7.8
7.0
Battery
8.8
8.2
Calls
6.5
7.1
Value
9.4
8.7
Price (USD)
$37
$33

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

Both shipped in 2025. The Tronsmart Sounfii NC 2 is the newer platform here: Bluetooth 6.0 against 5.4 and Top codec LDAC against AAC. The Nothing CMF Buds 2 answers on convenience features: it adds Wear detection and Water resistance IP55 against IPX5.

  • CMF Buds 22025
  • Sounfii NC 22025
What differsCMF Buds 2Sounfii NC 2

Platform

Bluetooth
5.4
6.0
Top codec
AAC
LDAC

Everyday features

Wear detection
Yes
No
Water resistance
IP55
IPX5

Level on: ANC type, Multipoint pairing, USB-C, Transparency mode, Custom EQ, Companion app.

Specifications

CMF Buds 2Sounfii NC 2
Type
True Wireless
True Wireless
Price (USD)
$37
$33
HearWiki score
82
74
Released
2025
2025
Availability
Sold new
Sold new
Driver
11 mm driver
2× 10 mm dynamic
Driver type
dynamic
dynamic
Driver size
11 mm
10 mm
Drivers per side
1
2
Frequency response
20 Hz - 20 kHz
20 Hz - 40 kHz
Bluetooth
5.4
6.0
Codecs
SBC, AAC
SBC, AAC, LDAC
Multipoint pairing
Yes
Yes
Latency
110 ms
-
Wireless range
10 m
-
Battery life
13.5 h
10 h
Battery life (ANC on)
7.5 h
7.5 h
Battery incl. case
55 h
40 h
Full charge time
93 min
90 min
Quick charge
10 min → 4 h
10 min → 1 h
Wireless charging
No
No
Active noise cancelling
Yes
Yes
ANC type
hybrid
hybrid
Transparency mode
Yes
Yes
Companion app
Yes
Yes
Custom EQ
Yes
Yes
Wear detection
Yes
No
Controls
touch
touch
Voice assistant
Yes
Yes
Weight
4.5 g
4.5 g
Case weight
41.5 g
-
Water resistance
IP55
IPX5
USB-C
Yes
Yes
Microphones
6
6
Microphone type
-
MEMS
Call noise reduction
-
Yes
Call NR technology
-
AI ENC

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 Sounfii NC 2

The Tronsmart Sounfii NC 2 are budget-friendly true wireless earbuds that pack a robust feature set, including hybrid active noise cancellation, LDAC support, and Bluetooth 6.0 with multipoint. With up to 10 hours of playback per charge and a total of 40 hours with the case, they're designed for extended listening sessions. The earbuds also feature touch controls, a customizable EQ via the app, and six microphones for clear calls, making them a versatile option for the price.

  • Pro:Strong hybrid ANC for the price
  • Pro:Excellent battery life with the case
  • Pro:LDAC support for high-resolution audio
  • Con:No wireless charging support
  • Con:Battery life drops to 7.5 hours with ANC on
  • Con:Touch controls may be overly sensitive for some users

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 Sounfii NC 2