True Wireless
Nothing CMF Buds 2
82Outstanding
$37
Full review dataNothing CMF Buds 2 vs Tronsmart Onix Zen: which should you buy?
Specs, scores and condensed review verdicts for the Nothing CMF Buds 2 vs Tronsmart Onix Zen, side by side. Where a product has no HearWiki score yet, not enough reviews have been aggregated to rate it.
True Wireless
Tronsmart Onix Zen
Not yet scored
$37
Full review dataScore 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 Onix Zen
HearWiki score
82
-
Sound
7.7
-
Noise cancelling
7.8
-
Battery
8.8
-
Calls
6.5
-
Value
9.4
-
Price (USD)
$37
$37
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?
Half a step newer
Nothing CMF Buds 2 (2025) against Tronsmart Onix Zen (2020). The Tronsmart Onix Zen edges ahead on platform, but only just: Top codec aptX against AAC.
- CMF Buds 220255 yr newer
- Onix Zen2020
What differsCMF Buds 2Onix Zen
- Top codec
- AAC
- aptX
Platform
Specifications
CMF Buds 2Onix Zen
- Type
- True Wireless
- True Wireless
- Price (USD)
- $37
- $37
- HearWiki score
- 82
- Not scored
- Released
- 2025
- 2020
- Availability
- Sold new
- Discontinued
- Driver
- 11 mm driver
- -
- Driver type
- dynamic
- -
- Driver size
- 11 mm
- -
- Drivers per side
- 1
- -
- Frequency response
- 20 Hz - 20 kHz
- -
- Bluetooth
- 5.4
- -
- Codecs
- SBC, AAC
- AAC, aptX
- Multipoint pairing
- Yes
- -
- Latency
- 110 ms
- -
- Wireless range
- 10 m
- -
- Battery life
- 13.5 h
- 7 h
- Battery life (ANC on)
- 7.5 h
- -
- Battery incl. case
- 55 h
- -
- Full charge time
- 93 min
- -
- Quick charge
- 10 min → 4 h
- -
- Wireless charging
- No
- -
- Active noise cancelling
- Yes
- Yes
- ANC type
- hybrid
- -
- Transparency mode
- Yes
- -
- Companion app
- Yes
- -
- Custom EQ
- Yes
- -
- Wear detection
- Yes
- -
- Controls
- touch
- -
- Voice assistant
- Yes
- -
- Weight
- 4.5 g
- -
- Case weight
- 41.5 g
- -
- Water resistance
- IP55
- -
- USB-C
- Yes
- -
- Model code
- -
- Onyx Neo
- Microphones
- 6
- -
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 Onix Zen
The Tronsmart Onix Zen are budget-friendly true wireless earbuds that deliver solid wireless performance with aptX and AAC support, plus active noise cancellation to help tune out ambient noise. They offer a comfortable, secure fit with a graphene-coated driver for crisp sound, and their battery life reaches about 7 hours per charge, extending further with the charging case.
- Pro:Affordable price with strong feature set
- Pro:Supports aptX and AAC for versatile codec compatibility
- Pro:Active noise cancellation helps reduce background hum
- Con:Battery life is modest at 7 hours per charge
- Con:ANC performance may be limited at this price point
- Con:No mention of wireless charging or fast-charge specs
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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