Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Bose - QuietComfort SC | Sony - WH-CH720N |
|---|---|---|
| Weight | 240 g | 192 g |
| Battery life | 24 h | 35 h |
| Driver size | 35 mm | 30 mm |
Between the QuietComfort SC and WH-CH720N, the QuietComfort SC comes out ahead in driver size, while the WH-CH720N wins on weight / battery life. Overall, the QuietComfort SC scores 70.2 and the WH-CH720N scores 71.4 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (70.2 vs 71.4). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the QuietComfort SC if you care most about driver size. The biggest gaps in its favor are driver size. The single most decisive one: Driver size — 16.67% more. 35 mm vs 30 mm.
Pick the WH-CH720N 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 weight, battery life. The single most decisive one: Weight — 48.00 g less. 192 vs 240.
Both ship with comparable active noise cancellation, spatial audio, multipoint, 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: Bose - QuietComfort SC or Sony - WH-CH720N?
Sony - WH-CH720N leads the current Mars Score by 1.2 points.The more useful decision is the trade-off behind that result: compare driver size, battery life, weight against the way you will actually use the product.
Choose Bose - QuietComfort SC if…
Bose - QuietComfort SC has the measurable edge on driver size mm.
Choose Sony - WH-CH720N if…
Sony - WH-CH720N has the measurable edge on weight g, battery life 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 Bose - QuietComfort SC wins
- ▲Driver size — 16.67% more. 35 mm vs 30 mm.
Why Sony - WH-CH720N wins
- ▲Weight — 48.00 g less. 192 vs 240.
- ▲Battery life — 45.83% more. 35 h vs 24 h.
Spec comparison
Design
| Spec | Bose - QuietComfort SC | Sony - WH-CH720N |
|---|---|---|
| Type | over-ear | over-ear |
| Weight | 240 g | 192 glead |
| Water resistance | none | none |
Audio
| Spec | Bose - QuietComfort SC | Sony - WH-CH720N |
|---|---|---|
| Driver sizeⓘ | 35 mmlead | 30 mm |
| Impedanceⓘ | 32 Ω | 48 Ωlead |
| Sensitivityⓘ | 98 dB | 100 dBlead |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | false | false |
Battery
| Spec | Bose - QuietComfort SC | Sony - WH-CH720N |
|---|---|---|
| Battery lifeⓘ | 24 h | 35 hlead |
| Fast chargeⓘ | true | true |
Connectivity
| Spec | Bose - QuietComfort SC | Sony - WH-CH720N |
|---|---|---|
| Bluetoothⓘ | 5.1 | 5.2lead |
| Multipointⓘ | true | true |
| 3.5mm jack | true | true |
| LDACⓘ | false | false |
| aptX HDⓘ | false | false |
Frequently asked
Which has better battery life, QuietComfort SC or WH-CH720N?+
WH-CH720N lasts 35 hours vs 24 hours.
Do QuietComfort SC or WH-CH720N have active noise cancellation?+
Both models have active noise cancellation.
Which supports LDAC, QuietComfort SC or WH-CH720N?+
Neither supports LDAC.