Sennheiser - Momentum True Wireless 4 vs Nothing - Ear (a) 2
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 | Nothing - Ear (a) 2 |
|---|---|---|
| Driver size | 7 mm | 11 mm |
| Battery — with case | 30 h | 42 h |
| Battery — buds | 7.5 h | 10 h |
| Weight per bud | 6.2 g | 4.8 g |
| Spatial audio | true | false |
Between the Momentum True Wireless 4 and Ear (a) 2, the Momentum True Wireless 4 comes out ahead in spatial audio, while the Ear (a) 2 wins on driver size / battery — with case. Overall, the Momentum True Wireless 4 scores 70.7 and the Ear (a) 2 scores 82.8 on our Mars Score.
Which should you buy?
The Ear (a) 2 is the clear pick on raw spec strength, leading by 12.1 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 Ear (a) 2 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. The single most decisive one: Driver size — 57.14% more. 11 mm vs 7 mm.
Both ship with comparable active noise cancellation, water resistance, multipoint, so those specs do not separate the two — focus on the differences below.
Bottom line: the Ear (a) 2 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 Nothing - Ear (a) 2?
Nothing - Ear (a) 2 leads the current Mars Score by 12.1 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 Nothing - Ear (a) 2 if…
Nothing - Ear (a) 2 has the measurable edge on driver size mm, battery life case h, 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 Sennheiser - Momentum True Wireless 4 wins
- ▲Has Spatial audio.
Why Nothing - Ear (a) 2 wins
- ▲Driver size — 57.14% more. 11 mm vs 7 mm.
- ▲Battery — with case — 40.00% more. 42 h vs 30 h.
- ▲Battery — buds — 33.33% more. 10 h vs 7.5 h.
- ▲Weight per bud — 1.40 g less. 4.8 vs 6.2.
Spec comparison
Design
| Spec | Sennheiser - Momentum True Wireless 4 | Nothing - Ear (a) 2 |
|---|---|---|
| Form factor | in-ear | in-ear |
| Weight per bud | 6.2 g | 4.8 glead |
| Water resistanceⓘ | IP54 | IP54 |
Audio
| Spec | Sennheiser - Momentum True Wireless 4 | Nothing - Ear (a) 2 |
|---|---|---|
| Driver sizeⓘ | 7 mm | 11 mmlead |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | truelead | false |
Battery
| Spec | Sennheiser - Momentum True Wireless 4 | Nothing - Ear (a) 2 |
|---|---|---|
| Battery — buds | 7.5 h | 10 hlead |
| Battery — with case | 30 h | 42 hlead |
| Wireless case chargingⓘ | truelead | false |
Connectivity
| Spec | Sennheiser - Momentum True Wireless 4 | Nothing - Ear (a) 2 |
|---|---|---|
| Bluetoothⓘ | 5.4lead | 5.3 |
| 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 Ear (a) 2?+
Ear (a) 2 lasts 10h per charge vs 7.5h.
Do Momentum True Wireless 4 or Ear (a) 2 support multipoint?+
Both support multipoint pairing.
Which has ANC, Momentum True Wireless 4 or Ear (a) 2?+
Both models have active noise cancellation.