Sennheiser - Momentum True Wireless 4 vs Anker - Liberty 4 Pro
Between the Momentum True Wireless 4 and Liberty 4 Pro, the Momentum True Wireless 4 comes out ahead in spatial audio and water resistance, while the Liberty 4 Pro wins on driver size and battery — buds. Overall, the Momentum True Wireless 4 scores 54.1 and the Liberty 4 Pro scores 72.8 on our Mars Score.
Which should you buy?
The Liberty 4 Pro is the clear pick on raw spec strength, leading by 18.7 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, water resistance.
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 driver size, battery — buds, battery — with case, among others.
Both ship with comparable active noise cancellation, multipoint, so those specs don't separate the two — focus on the differences below.
Bottom line: the Liberty 4 Pro is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Sennheiser - Momentum True Wireless 4 wins
- ▲Has Spatial audio.
- ▲Water resistance: IP54 (vs IPX4).
Why Anker - Liberty 4 Pro wins
- ▲Driver size — 50.00% more. 10.5 mm vs 7 mm.
- ▲Battery — buds — 33.33% more. 10 h vs 7.5 h.
- ▲Battery — with case — 33.33% more. 40 h vs 30 h.
- ▲Weight per bud — 0.60 g less. 5.6 vs 6.2.
Spec comparison
Design
| Spec | Sennheiser - Momentum True Wireless 4 | Anker - Liberty 4 Pro |
|---|---|---|
| Form factor | in-ear | in-ear |
| Weight per bud | 6.2 g | 5.6 glead |
| Water resistanceⓘ | IP54lead | IPX4 |
Audio
| Spec | Sennheiser - Momentum True Wireless 4 | Anker - Liberty 4 Pro |
|---|---|---|
| Driver sizeⓘ | 7 mm | 10.5 mmlead |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | truelead | false |
Battery
| Spec | Sennheiser - Momentum True Wireless 4 | Anker - Liberty 4 Pro |
|---|---|---|
| Battery — buds | 7.5 h | 10 hlead |
| Battery — with case | 30 h | 40 hlead |
| Wireless case chargingⓘ | true | true |
Connectivity
| Spec | Sennheiser - Momentum True Wireless 4 | Anker - Liberty 4 Pro |
|---|---|---|
| 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 4 Pro?+
Liberty 4 Pro lasts 10h per charge vs 7.5h.
Do Momentum True Wireless 4 or Liberty 4 Pro support multipoint?+
Both support multipoint pairing.
Which has ANC, Momentum True Wireless 4 or Liberty 4 Pro?+
Both have active noise cancellation.
Spec-level deep dives
More from the same brands
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.