Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Nothing - Ear (3) | Anker - Liberty 4 Pro |
|---|---|---|
| Battery — buds | 8.5 h | 10 h |
| Driver size | 11 mm | 10.5 mm |
| Weight per bud | 4.6 g | 5.6 g |
| Water resistance | IP54 | IPX4 |
Between the Ear (3) and Liberty 4 Pro, the Ear (3) comes out ahead in driver size / weight per bud, while the Liberty 4 Pro wins on battery — buds. Overall, the Ear (3) scores 79.8 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 (79.8 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 Ear (3) if you care most about driver size / weight per bud. The biggest gaps in its favor are driver size, weight per bud, water resistance. The single most decisive one: Driver size — 4.76% more. 11 mm vs 10.5 mm.
Pick the Liberty 4 Pro if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. Its strongest claims are battery — buds. The single most decisive one: Battery — buds — 17.65% more. 10 h vs 8.5 h.
Both ship with comparable battery — with case, active noise cancellation, spatial audio, 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: Nothing - Ear (3) or Anker - Liberty 4 Pro?
Anker - Liberty 4 Pro leads the current Mars Score by 1.8 points.The more useful decision is the trade-off behind that result: compare driver size, battery — buds, weight per bud against the way you will actually use the product.
Choose Nothing - Ear (3) if…
Nothing - Ear (3) has the measurable edge on driver size mm, weight per bud g, ip rating.
Choose Anker - Liberty 4 Pro if…
Anker - Liberty 4 Pro has the measurable edge on battery life buds h.
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 Nothing - Ear (3) wins
- ▲Driver size — 4.76% more. 11 mm vs 10.5 mm.
- ▲Weight per bud — 1.00 g less. 4.6 vs 5.6.
- ▲Water resistance: IP54 (vs IPX4).
Why Anker - Liberty 4 Pro wins
- ▲Battery — buds — 17.65% more. 10 h vs 8.5 h.
Spec comparison
Design
| Spec | Nothing - Ear (3) | Anker - Liberty 4 Pro |
|---|---|---|
| Form factor | in-ear | in-ear |
| Weight per bud | 4.6 glead | 5.6 g |
| Water resistanceⓘ | IP54lead | IPX4 |
Audio
| Spec | Nothing - Ear (3) | Anker - Liberty 4 Pro |
|---|---|---|
| Driver sizeⓘ | 11 mmlead | 10.5 mm |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | false | false |
Battery
| Spec | Nothing - Ear (3) | Anker - Liberty 4 Pro |
|---|---|---|
| Battery — buds | 8.5 h | 10 hlead |
| Battery — with case | 40 h | 40 h |
| Wireless case chargingⓘ | true | true |
Connectivity
| Spec | Nothing - Ear (3) | Anker - Liberty 4 Pro |
|---|---|---|
| Bluetoothⓘ | 5.3 | 5.4lead |
| Codecsⓘ | LDAC,LHDC 5.0,AAC,SBC | LDAC,AAC,SBC |
| Multipointⓘ | true | true |
| In-ear detection | true | true |
Frequently asked
Which has longer battery, Ear (3) or Liberty 4 Pro?+
Liberty 4 Pro lasts 10h per charge vs 8.5h.
Do Ear (3) or Liberty 4 Pro support multipoint?+
Both support multipoint pairing.
Which has ANC, Ear (3) or Liberty 4 Pro?+
Both models have active noise cancellation.