Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Master & Dynamic - MW09 | Anker - Liberty 5 |
|---|---|---|
| Battery — buds | 16 h | 12 h |
| Driver size | 11 mm | 10 mm |
| Weight per bud | 6 g | 4.5 g |
| Water resistance | IP57 | IP55 |
Between the MW09 and Liberty 5, the MW09 comes out ahead in battery — buds / driver size, while the Liberty 5 wins on weight per bud. Overall, the MW09 scores 86.1 and the Liberty 5 scores 85.8 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (86.1 vs 85.8). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the MW09 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, water resistance. The single most decisive one: Battery — buds — 33.33% more. 16 h vs 12 h.
Pick the Liberty 5 if you care most about weight per bud. Its strongest claims are weight per bud. The single most decisive one: Weight per bud — 1.50 g less. 4.5 vs 6.
Both ship with comparable battery — with case, active noise cancellation, 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: Master & Dynamic - MW09 or Anker - Liberty 5?
Master & Dynamic - MW09 leads the current Mars Score by 0.3 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 Master & Dynamic - MW09 if…
Master & Dynamic - MW09 has the measurable edge on battery life buds h, driver size mm, ip rating.
Choose Anker - Liberty 5 if…
Anker - Liberty 5 has the measurable edge on weight per bud g.
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 Master & Dynamic - MW09 wins
- ▲Battery — buds — 33.33% more. 16 h vs 12 h.
- ▲Driver size — 10.00% more. 11 mm vs 10 mm.
- ▲Water resistance: IP57 (vs IP55).
Why Anker - Liberty 5 wins
- ▲Weight per bud — 1.50 g less. 4.5 vs 6.
Spec comparison
Design
| Spec | Master & Dynamic - MW09 | Anker - Liberty 5 |
|---|---|---|
| Form factor | in-ear | in-ear |
| Weight per bud | 6 g | 4.5 glead |
| Water resistanceⓘ | IP57lead | IP55 |
Audio
| Spec | Master & Dynamic - MW09 | Anker - Liberty 5 |
|---|---|---|
| Driver sizeⓘ | 11 mmlead | 10 mm |
| Active noise cancellationⓘ | true | true |
| Transparency mode | true | true |
| Spatial audioⓘ | false | false |
Battery
| Spec | Master & Dynamic - MW09 | Anker - Liberty 5 |
|---|---|---|
| Battery — buds | 16 hlead | 12 h |
| Battery — with case | 48 h | 48 h |
| Wireless case chargingⓘ | true | true |
Connectivity
| Spec | Master & Dynamic - MW09 | Anker - Liberty 5 |
|---|---|---|
| Bluetoothⓘ | 5.4 | 5.4 |
| Codecsⓘ | aptX Lossless,aptX Adaptive,AAC,SBC | LDAC,AAC,SBC |
| Multipointⓘ | true | true |
| In-ear detection | true | true |
Frequently asked
Which has longer battery, MW09 or Liberty 5?+
MW09 lasts 16h per charge vs 12h.
Do MW09 or Liberty 5 support multipoint?+
Both support multipoint pairing.
Which has ANC, MW09 or Liberty 5?+
Both models have active noise cancellation.