True Wireless
Kiwi Ears Spark
45Weak
$90
Full review dataKiwi Ears Spark 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.
Kiwi Ears Spark
Sound4.5
Battery5.0
Calls5.0
Value4.0
OnePlus Buds Pro 4
Sound8.5
Noise cancelling8.0
Battery8.5
Calls7.5
Value9.0
Specifications
| Spec | Kiwi Ears Spark | OnePlus Buds Pro 4 |
|---|---|---|
| Type | True Wireless | True Wireless |
| Price (USD) | $90 | $130 |
| HearWiki score | 45 / 100 · Weak | 84 / 100 · Great |
| Released | 2025 | 2026 |
| Audio | ||
| Driver | dynamic | dual drivers; 11mm woofer + 6mm tweeter |
| Driver size | 17 mm | 11 mm |
| Drivers per side | 1 | 1 |
| Frequency response | 20Hz-20kHz | 10Hz-40kHz |
| Impedance | 16 Ω | - |
| Sensitivity | 113 dB/mW | - |
| Wireless | ||
| Bluetooth | 5.2 | 5.4 |
| Bluetooth version | 5.2 | - |
| Codecs | SBC, AAC, APTX | SBC, AAC, LHDC 5.0 |
| Multipoint pairing | No | Yes |
| Latency | - | 47 ms |
| Wireless range | 12 m | 10 m |
| Battery | ||
| Battery life | 7 h | 13 h |
| Battery life (ANC on) | - | 7 h |
| Battery incl. case | 21 h | 45 h |
| Full charge time | 90 min | 70 min |
| Quick charge | - | 10 min = 11 hours playback |
| Wireless charging | No | Yes |
| Features | ||
| Active noise cancelling | No | Yes |
| ANC type | none | adaptive |
| Transparency mode | No | Yes |
| Companion app | No | Yes |
| Custom EQ | No | Yes |
| Wear detection | No | Yes |
| Controls | touch | touch |
| Voice assistant | yes | yes |
| Design | ||
| Weight | 8.7 g | 4.73 g |
| Case weight | 85 g | 50.62 g |
| Water resistance | IP45 | IP55 |
| USB-C | Yes | Yes |
| Model code | - | OnePlus Buds 4 |
| Calls | ||
| Microphones | 2 | 3 |
What reviewers said
Kiwi Ears Spark
The Kiwi Ears Spark are open-style wireless earbuds aimed at active users, featuring a 17mm dynamic driver and Bluetooth 5.2 with SBC, AAC, and aptX codec support. They offer a lightweight, IP45-rated design with touch controls and a total battery life of 21 hours when including the charging case, though they lack ANC, transparency mode, and multipoint connectivity. Sound quality is generally praised for its clarity and balance, but the bass response is notably weak, and the large case and overly sensitive touch controls draw criticism.
- Pro:Comfortable and secure fit for workouts
- Pro:Clear and detailed sound for an open design
- Pro:Sturdy build quality with IP45 water resistance
- Con:Bass is thin and lacks impact
- Con:Charging case is bulky and heavy
- Con:Touch controls are overly sensitive and prone to accidental taps
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.
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