Sennheiser - Momentum True Wireless 4 vs Anker - Liberty 5
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Sennheiser - Momentum True Wireless 4 | Anker - Liberty 5 |
|---|---|---|
| Battery — buds | 7.5 h | 12 h |
| Battery — with case | 30 h | 48 h |
| Driver size | 7 mm | 10 mm |
| Weight per bud | 6.2 g | 4.5 g |
| Spatial audio | true | false |
| Water resistance | IP54 | IP55 |
Between the Momentum True Wireless 4 and Liberty 5, the Momentum True Wireless 4 comes out ahead in spatial audio, while the Liberty 5 wins on battery — buds / battery — with case. Overall, the Momentum True Wireless 4 scores 70.7 and the Liberty 5 scores 85.8 on our Mars Score.
Which should you buy?
The Liberty 5 is the clear pick on raw spec strength, leading by 15.1 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Momentum True Wireless 4 if audio quality and feature breadth (ANC, codecs, multipoint) are the lead criteria for your purchase. The biggest gaps in its favor are spatial audio. The single most decisive one: Has Spatial audio.
Pick the Liberty 5 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, battery — with case, driver size, among others. The single most decisive one: Battery — buds — 60.00% more. 12 h vs 7.5 h.
Both ship with comparable active noise cancellation, multipoint, so those specs do not separate the two — focus on the differences below.
Bottom line: the Liberty 5 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Sennheiser - Momentum True Wireless 4 or Anker - Liberty 5?
Anker - Liberty 5 leads the current Mars Score by 15.1 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 Sennheiser - Momentum True Wireless 4 if…
Sennheiser - Momentum True Wireless 4 has the measurable edge on has spatial audio.
Choose Anker - Liberty 5 if…
Anker - Liberty 5 has the measurable edge on battery life buds h, battery life case h, driver size mm.
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 Sennheiser - Momentum True Wireless 4 wins
- ▲Has Spatial audio.
Why Anker - Liberty 5 wins
- ▲Battery — buds — 60.00% more. 12 h vs 7.5 h.
- ▲Battery — with case — 60.00% more. 48 h vs 30 h.
- ▲Driver size — 42.86% more. 10 mm vs 7 mm.
- ▲Weight per bud — 1.70 g less. 4.5 vs 6.2.
- ▲Water resistance: IP55 (vs IP54).
Spec comparison
Design
| Spec | Sennheiser - Momentum True Wireless 4 | Anker - Liberty 5 |
|---|---|---|
| Form factor | in-ear | in-ear |
| Weight per bud | 6.2 g | 4.5 glead |
| Water resistanceⓘ | IP54 | IP55lead |
Audio
| Spec | Sennheiser - Momentum True Wireless 4 | Anker - Liberty 5 |
|---|---|---|
| Driver sizeⓘ | 7 mm | 10 mmlead |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | truelead | false |
Battery
| Spec | Sennheiser - Momentum True Wireless 4 | Anker - Liberty 5 |
|---|---|---|
| Battery — buds | 7.5 h | 12 hlead |
| Battery — with case | 30 h | 48 hlead |
| Wireless case chargingⓘ | true | true |
Connectivity
| Spec | Sennheiser - Momentum True Wireless 4 | Anker - Liberty 5 |
|---|---|---|
| Bluetoothⓘ | 5.4 | 5.4 |
| Codecsⓘ | aptX Lossless,LC3,AAC,SBC | LDAC,AAC,SBC |
| Multipointⓘ | true | true |
| In-ear detection | true | true |
Frequently asked
Which has longer battery, Momentum True Wireless 4 or Liberty 5?+
Liberty 5 lasts 12h per charge vs 7.5h.
Do Momentum True Wireless 4 or Liberty 5 support multipoint?+
Both support multipoint pairing.
Which has ANC, Momentum True Wireless 4 or Liberty 5?+
Both models have active noise cancellation.