True Wireless
Nothing CMF Buds 2
82Outstanding
$37
Full review dataNothing CMF Buds 2 vs OPPO Air4i: which should you buy?
Specs, scores and condensed review verdicts for the Nothing CMF Buds 2 vs OPPO Air4i, side by side. Where a product has no HearWiki score yet, not enough reviews have been aggregated to rate it.
True Wireless
OPPO Air4i
Not yet scored
$23
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
- OPPO Air4i
HearWiki score
82
-
Sound
7.7
-
Noise cancelling
7.8
-
Battery
8.8
-
Calls
6.5
-
Value
9.4
-
Price (USD)
$37
$23
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
Both shipped in 2025. The Nothing CMF Buds 2 edges ahead on platform, but only just: ANC type Hybrid against None. It also adds Wear detection and Transparency mode.
- CMF Buds 22025
- Air4i2025
What differsCMF Buds 2Air4i
- ANC type
- Hybrid
- None
- Wear detection
- Yes
- No
- Transparency mode
- Yes
- No
Platform
Everyday features
Level on: Bluetooth, Top codec, USB-C, Custom EQ, Companion app, Water resistance.
Specifications
CMF Buds 2Air4i
- Type
- True Wireless
- True Wireless
- Price (USD)
- $37
- $23
- HearWiki score
- 82
- Not scored
- Released
- 2025
- 2025
- Availability
- Sold new
- Sold new
- Driver
- 11 mm driver
- 12.4 mm dynamic
- Driver type
- dynamic
- dynamic
- Driver size
- 11 mm
- 12.4 mm
- Drivers per side
- 1
- -
- Frequency response
- 20 Hz - 20 kHz
- 20 Hz - 20 kHz
- Impedance
- -
- 32 Ω
- Sensitivity
- -
- 114 dB/mW
- Bluetooth
- 5.4
- 5.4
- Codecs
- SBC, AAC
- SBC, AAC
- Multipoint pairing
- Yes
- -
- Latency
- 110 ms
- -
- Wireless range
- 10 m
- 10 m
- Battery life
- 13.5 h
- 12 h
- Battery life (ANC on)
- 7.5 h
- -
- Battery incl. case
- 55 h
- 54 h
- Full charge time
- 93 min
- 120 min
- Quick charge
- 10 min → 4 h
- 10 min → 4 h
- Wireless charging
- No
- -
- Active noise cancelling
- Yes
- No
- ANC type
- hybrid
- none
- Transparency mode
- Yes
- No
- Companion app
- Yes
- Yes
- Custom EQ
- Yes
- Yes
- Wear detection
- Yes
- No
- Controls
- touch
- touch
- Voice assistant
- Yes
- Yes
- Weight
- 4.5 g
- 4.2 g
- Case weight
- 41.5 g
- -
- Water resistance
- IP55
- IP55
- USB-C
- Yes
- Yes
- Model code
- -
- OPPO Enco Air4
- Microphones
- 6
- 1
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
OPPO Air4i
The OPPO Air4i are budget-friendly true wireless earbuds that prioritize long battery life and comfort over noise cancellation. With a 12.4mm dynamic driver and Bluetooth 5.4, they deliver solid wireless performance for everyday listening, while IP55 water resistance adds durability for workouts or light rain.
- Pro:Long 12-hour single charge battery life, 54 hours with case
- Pro:Lightweight design at just 4.2g per earbud for all-day comfort
- Pro:IP55 water and dust resistance for active use
- Con:No active noise cancellation, so ambient sounds remain audible
- Con:Only supports SBC and AAC codecs, no aptX or LDAC
- Con:Single microphone may limit call clarity in noisy environments
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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