Sennheiser - Accentum True Wireless vs Anker - Liberty 4 Pro
Between the Accentum True Wireless and Liberty 4 Pro, the Accentum True Wireless comes out ahead in several specs, while the Liberty 4 Pro wins on driver size and battery — with case. Overall, the Accentum True Wireless scores 55.5 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 17.3 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.
The Accentum True Wireless doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
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 — with case, battery — buds, among others.
Both ship with comparable active noise cancellation, water resistance, spatial audio, 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 - Accentum True Wireless wins
- No decisive advantages.
Why Anker - Liberty 4 Pro wins
- ▲Driver size — 50.00% more. 10.5 mm vs 7 mm.
- ▲Battery — with case — 42.86% more. 40 h vs 28 h.
- ▲Battery — buds — 25.00% more. 10 h vs 8 h.
- ▲Weight per bud — 0.40 g less. 5.6 vs 6.0.
Spec comparison
Design
| Spec | Sennheiser - Accentum True Wireless | Anker - Liberty 4 Pro |
|---|---|---|
| Form factor | in-ear | in-ear |
| Weight per bud | 6.0 g | 5.6 glead |
| Water resistanceⓘ | IPX4 | IPX4 |
Audio
| Spec | Sennheiser - Accentum True Wireless | Anker - Liberty 4 Pro |
|---|---|---|
| Driver sizeⓘ | 7 mm | 10.5 mmlead |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | false | false |
Battery
| Spec | Sennheiser - Accentum True Wireless | Anker - Liberty 4 Pro |
|---|---|---|
| Battery — buds | 8 h | 10 hlead |
| Battery — with case | 28 h | 40 hlead |
| Wireless case chargingⓘ | false | truelead |
Connectivity
| Spec | Sennheiser - Accentum True Wireless | Anker - Liberty 4 Pro |
|---|---|---|
| Bluetoothⓘ | 5.3 | 5.4lead |
| Codecs | aptX,AAC,SBC | LDAC,AAC,SBC |
| Multipointⓘ | true | true |
| In-ear detection | false | truelead |
Frequently asked
Which has longer battery, Accentum True Wireless or Liberty 4 Pro?+
Liberty 4 Pro lasts 10h per charge vs 8h.
Do Accentum True Wireless or Liberty 4 Pro support multipoint?+
Both support multipoint pairing.
Which has ANC, Accentum True Wireless 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.