Sony - LinkBuds Open 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 | Sony - LinkBuds Open | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Battery — buds | 8 h | 6 h |
| Driver size | 11 mm | 9.3 mm |
| Battery — with case | 22 h | 24 h |
| Weight per bud | 5.1 g | 6.2 g |
| Active noise cancellation | false | true |
Between the LinkBuds Open and QuietComfort Ultra Earbuds 2, the LinkBuds Open comes out ahead in battery — buds / driver size, while the QuietComfort Ultra Earbuds 2 wins on battery — with case / active noise cancellation. Overall, the LinkBuds Open scores 63.6 and the QuietComfort Ultra Earbuds 2 scores 70.9 on our Mars Score.
Which should you buy?
The QuietComfort Ultra Earbuds 2 edges ahead on the Mars Score (63.6 vs 70.9), but the 7.3-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the LinkBuds Open 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, driver size, weight per bud. The single most decisive one: Battery — buds — 33.33% more. 8 h vs 6 h.
Pick the QuietComfort Ultra Earbuds 2 if audio quality and feature breadth (ANC, codecs, multipoint) are the lead criteria for your purchase. Its strongest claims are battery — with case, active noise cancellation. The single most decisive one: Battery — with case — 9.09% more. 24 h vs 22 h.
Both ship with comparable water resistance, spatial audio, multipoint, so those specs do not separate the two — focus on the differences below.
Bottom line: the QuietComfort Ultra Earbuds 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: Sony - LinkBuds Open or Bose - QuietComfort Ultra Earbuds 2?
Bose - QuietComfort Ultra Earbuds 2 leads the current Mars Score by 7.3 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 Sony - LinkBuds Open if…
Sony - LinkBuds Open has the measurable edge on battery life buds h, driver size mm, weight per bud g.
Choose Bose - QuietComfort Ultra Earbuds 2 if…
Bose - QuietComfort Ultra Earbuds 2 has the measurable edge on battery life case h, has anc.
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 Sony - LinkBuds Open wins
- ▲Battery — buds — 33.33% more. 8 h vs 6 h.
- ▲Driver size — 18.28% more. 11 mm vs 9.3 mm.
- ▲Weight per bud — 1.10 g less. 5.1 vs 6.2.
Why Bose - QuietComfort Ultra Earbuds 2 wins
- ▲Battery — with case — 9.09% more. 24 h vs 22 h.
- ▲Has Active noise cancellation.
Spec comparison
Design
| Spec | Sony - LinkBuds Open | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Form factor | openlead | in-ear |
| Weight per bud | 5.1 glead | 6.2 g |
| Water resistanceⓘ | IPX4 | IPX4 |
Audio
| Spec | Sony - LinkBuds Open | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Driver sizeⓘ | 11 mmlead | 9.3 mm |
| Active noise cancellationⓘ | false | truelead |
| Transparency mode | false | truelead |
| Spatial audioⓘ | true | true |
Battery
| Spec | Sony - LinkBuds Open | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Battery — buds | 8 hlead | 6 h |
| Battery — with case | 22 h | 24 hlead |
| Wireless case chargingⓘ | false | truelead |
Connectivity
| Spec | Sony - LinkBuds Open | Bose - QuietComfort Ultra Earbuds 2 |
|---|---|---|
| Bluetoothⓘ | 5.3 | 5.4lead |
| Codecsⓘ | AAC,SBC | aptX Adaptive,AAC,SBC |
| Multipointⓘ | true | true |
| In-ear detection | false | truelead |
Frequently asked
Which has longer battery, LinkBuds Open or QuietComfort Ultra Earbuds 2?+
LinkBuds Open lasts 8h per charge vs 6h.
Do LinkBuds Open or QuietComfort Ultra Earbuds 2 support multipoint?+
Both support multipoint pairing.
Which has ANC, LinkBuds Open or QuietComfort Ultra Earbuds 2?+
QuietComfort Ultra Earbuds 2 has active noise cancellation; LinkBuds Open does not.