Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | OnePlus - Buds Pro 3 | Anker - Liberty 4 Pro |
|---|---|---|
| Battery — with case | 43 h | 40 h |
| Driver size | 11 mm | 10.5 mm |
| Spatial audio | true | false |
| Weight per bud | 4.8 g | 5.6 g |
| Water resistance | IP55 | IPX4 |
Between the Buds Pro 3 and Liberty 4 Pro, the Buds Pro 3 comes out ahead in battery — with case / driver size, while the Liberty 4 Pro wins on several specs. Overall, the Buds Pro 3 scores 82.8 and the Liberty 4 Pro scores 81.6 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (82.8 vs 81.6). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Buds Pro 3 if audio quality and feature breadth (ANC, codecs, multipoint) are the lead criteria for your purchase. The biggest gaps in its favor are battery — with case, driver size, spatial audio, among others. The single most decisive one: Battery — with case — 7.50% more. 43 h vs 40 h.
The Liberty 4 Pro similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable battery — buds, active noise cancellation, multipoint, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: OnePlus - Buds Pro 3 or Anker - Liberty 4 Pro?
OnePlus - Buds Pro 3 leads the current Mars Score by 1.2 points.The more useful decision is the trade-off behind that result: compare driver size, weight per bud against the way you will actually use the product.
Choose OnePlus - Buds Pro 3 if…
OnePlus - Buds Pro 3 has the measurable edge on battery life case h, driver size mm, has spatial audio.
Choose Anker - Liberty 4 Pro if…
Anker - Liberty 4 Pro does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why OnePlus - Buds Pro 3 wins
- ▲Battery — with case — 7.50% more. 43 h vs 40 h.
- ▲Driver size — 4.76% more. 11 mm vs 10.5 mm.
- ▲Has Spatial audio.
- ▲Weight per bud — 0.80 g less. 4.8 vs 5.6.
- ▲Water resistance: IP55 (vs IPX4).
Why Anker - Liberty 4 Pro wins
- No decisive advantages.
Spec comparison
Design
| Spec | OnePlus - Buds Pro 3 | Anker - Liberty 4 Pro |
|---|---|---|
| Form factor | in-ear | in-ear |
| Weight per bud | 4.8 glead | 5.6 g |
| Water resistanceⓘ | IP55lead | IPX4 |
Audio
| Spec | OnePlus - Buds Pro 3 | Anker - Liberty 4 Pro |
|---|---|---|
| Driver sizeⓘ | 11 mmlead | 10.5 mm |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | truelead | false |
Battery
| Spec | OnePlus - Buds Pro 3 | Anker - Liberty 4 Pro |
|---|---|---|
| Battery — buds | 10 h | 10 h |
| Battery — with case | 43 hlead | 40 h |
| Wireless case chargingⓘ | true | true |
Connectivity
| Spec | OnePlus - Buds Pro 3 | Anker - Liberty 4 Pro |
|---|---|---|
| Bluetoothⓘ | 5.4 | 5.4 |
| Codecsⓘ | LHDC,LDAC,AAC,SBC | LDAC,AAC,SBC |
| Multipointⓘ | true | true |
| In-ear detection | true | true |
Frequently asked
Which has longer battery, Buds Pro 3 or Liberty 4 Pro?+
Liberty 4 Pro lasts 10h per charge vs 10h.
Do Buds Pro 3 or Liberty 4 Pro support multipoint?+
Both support multipoint pairing.
Which has ANC, Buds Pro 3 or Liberty 4 Pro?+
Both models have active noise cancellation.