Sennheiser - Momentum True Wireless 4 vs Bose - QuietComfort Ultra Earbuds 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 | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Driver size | 7 mm | 9.3 mm |
| Battery — buds | 7.5 h | 6 h |
| Battery — with case | 30 h | 24 h |
| Water resistance | IP54 | IPX4 |
Between the Momentum True Wireless 4 and QuietComfort Ultra Earbuds 2, the Momentum True Wireless 4 comes out ahead in battery — buds / battery — with case, while the QuietComfort Ultra Earbuds 2 wins on driver size. Overall, the Momentum True Wireless 4 scores 70.7 and the QuietComfort Ultra Earbuds 2 scores 70.9 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (70.7 vs 70.9). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Momentum True Wireless 4 if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. The biggest gaps in its favor are battery — buds, battery — with case, water resistance. The single most decisive one: Battery — buds — 25.00% more. 7.5 h vs 6 h.
Pick the QuietComfort Ultra Earbuds 2 if you care most about driver size. Its strongest claims are driver size. The single most decisive one: Driver size — 32.86% more. 9.3 mm vs 7 mm.
Both ship with comparable active noise cancellation, weight per bud, 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: Sennheiser - Momentum True Wireless 4 or Bose - QuietComfort Ultra Earbuds 2?
Bose - QuietComfort Ultra Earbuds 2 leads the current Mars Score by 0.2 points.The more useful decision is the trade-off behind that result: compare driver size, battery — buds 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 battery life buds h, battery life case h, ip rating.
Choose Bose - QuietComfort Ultra Earbuds 2 if…
Bose - QuietComfort Ultra Earbuds 2 has the measurable edge on 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
- ▲Battery — buds — 25.00% more. 7.5 h vs 6 h.
- ▲Battery — with case — 25.00% more. 30 h vs 24 h.
- ▲Water resistance: IP54 (vs IPX4).
Why Bose - QuietComfort Ultra Earbuds 2 wins
- ▲Driver size — 32.86% more. 9.3 mm vs 7 mm.
Spec comparison
Design
| Spec | Sennheiser - Momentum True Wireless 4 | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Form factor | in-ear | in-ear |
| Weight per bud | 6.2 g | 6.2 g |
| Water resistanceⓘ | IP54lead | IPX4 |
Audio
| Spec | Sennheiser - Momentum True Wireless 4 | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Driver sizeⓘ | 7 mm | 9.3 mmlead |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | true | true |
Battery
| Spec | Sennheiser - Momentum True Wireless 4 | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Battery — buds | 7.5 hlead | 6 h |
| Battery — with case | 30 hlead | 24 h |
| Wireless case chargingⓘ | true | true |
Connectivity
| Spec | Sennheiser - Momentum True Wireless 4 | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Bluetoothⓘ | 5.4 | 5.4 |
| Codecsⓘ | aptX Lossless,LC3,AAC,SBC | aptX Adaptive,AAC,SBC |
| Multipointⓘ | true | true |
| In-ear detection | true | true |
Frequently asked
Which has longer battery, Momentum True Wireless 4 or QuietComfort Ultra Earbuds 2?+
Momentum True Wireless 4 lasts 7.5h per charge vs 6h.
Do Momentum True Wireless 4 or QuietComfort Ultra Earbuds 2 support multipoint?+
Both support multipoint pairing.
Which has ANC, Momentum True Wireless 4 or QuietComfort Ultra Earbuds 2?+
Both models have active noise cancellation.