True Wireless
Acefast Acefit Air
62Average
$68
Full review dataAcefast Acefit Air vs OnePlus Buds Pro 4: which should you buy?
On aggregated review scores the OnePlus Buds Pro 4 comes out ahead with an HearWiki score of 84. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: OnePlus Buds Pro 4 - Great overall at around $130.
True Wireless
OnePlus Buds Pro 4
84Great
$130
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
Acefast Acefit Air
Sound5.5
Battery5.0
Calls6.3
Value6.0
OnePlus Buds Pro 4
Sound8.5
Noise cancelling8.0
Battery8.5
Calls7.5
Value9.0
Specifications
| Spec | Acefast Acefit Air | OnePlus Buds Pro 4 |
|---|---|---|
| Type | True Wireless | True Wireless |
| Price (USD) | $68 | $130 |
| HearWiki score | 62 / 100 · Average | 84 / 100 · Great |
| Released | 2025 | 2026 |
| Audio | ||
| Driver | dynamic | dual drivers; 11mm woofer + 6mm tweeter |
| Driver size | 20 mm | 11 mm |
| Drivers per side | 2 | 1 |
| Frequency response | 50Hz-20kHz | 10Hz-40kHz |
| Impedance | 32 Ω | - |
| Sensitivity | 90 dB/mW | - |
| Wireless | ||
| Bluetooth | 5.4 | 5.4 |
| Bluetooth version | 5.4 | - |
| Codecs | SBC, AAC | SBC, AAC, LHDC 5.0 |
| Multipoint pairing | Yes | Yes |
| Latency | - | 47 ms |
| Wireless range | 10 m | 10 m |
| Battery | ||
| Battery life | 6 h | 13 h |
| Battery life (ANC on) | - | 7 h |
| Battery incl. case | 25 h | 45 h |
| Full charge time | 60 min | 70 min |
| Quick charge | 10 min = 2 h | 10 min = 11 hours playback |
| Wireless charging | No | Yes |
| Features | ||
| Active noise cancelling | No | Yes |
| ANC type | - | adaptive |
| Transparency mode | - | Yes |
| Companion app | Yes | Yes |
| Custom EQ | Yes | Yes |
| Wear detection | - | Yes |
| Controls | touch | touch |
| Voice assistant | - | yes |
| Design | ||
| Weight | 54.8 g | 4.73 g |
| Case weight | - | 50.62 g |
| Water resistance | IP54 | IP55 |
| USB-C | Yes | Yes |
| Model code | - | OnePlus Buds 4 |
| Calls | ||
| Microphones | 4 | 3 |
What reviewers said
Acefast Acefit Air
These open-ear wireless earbuds offer a comfortable, secure fit ideal for workouts and daily wear, with a sleek design and surprisingly decent audio for the price. They keep you aware of your surroundings but lack noise isolation, making them less suited for noisy environments, and their sound can be underwhelming in windy conditions. Overall, they're a solid budget pick for active listeners who prioritize comfort and awareness over immersive audio.
- Pro:Very comfortable and secure fit for sports
- Pro:Sleek, lightweight design
- Pro:Good value for open-ear sound quality
- Con:No ANC or noise isolation
- Con:Sound lacks engagement, especially in wind
- Con:Limited feature set vs. premium rivals
OnePlus Buds Pro 4
The OnePlus Buds Pro 4 are a well-rounded pair of true wireless earbuds that deliver impressive audio, adaptive noise cancellation, and strong battery life for their price. They're particularly suited for active lifestyles thanks to their IP55 rating and secure fit, with a feature set that includes multipoint, wireless charging, and customizable EQ. Overall, they offer excellent value and perform above their price point across most key areas.
- Pro:Rich dual-driver sound with LHDC support
- Pro:Effective adaptive ANC and transparency mode
- Pro:Long battery life with wireless charging case
- Con:Touch controls may require a learning curve
- Con:No official mention of wear detection
- Con:Slightly bulky case compared to rivals
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.