Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Corsair - M75 Air Wireless | Logitech - MX Master 4 |
|---|---|---|
| Battery | 100 h | 1680 h |
| Polling rate | 2000 Hz | 125 Hz |
| Max DPI | 26000 | 8000 |
| Weight | 60 g | 150 g |
| Buttons | 6 | 7 |
Between the M75 Air Wireless and MX Master 4, the M75 Air Wireless comes out ahead in polling rate / max dpi, while the MX Master 4 wins on battery / buttons. Overall, the M75 Air Wireless scores 64.9 and the MX Master 4 scores 50.9 on our Mars Score.
Which should you buy?
The M75 Air Wireless is the clear pick on raw spec strength, leading by 14.0 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 M75 Air Wireless if you carry the device everywhere and weight or thickness has been the deciding factor before. The biggest gaps in its favor are polling rate, max dpi, weight. The single most decisive one: Polling rate — 1500.00% more. 2000 Hz vs 125 Hz.
Pick the MX Master 4 if you care most about battery / buttons. Its strongest claims are battery, buttons. The single most decisive one: Battery — 1580.00% more. 1680 h vs 100 h.
Both ship with comparable wireless, so those specs do not separate the two — focus on the differences below.
Bottom line: the M75 Air Wireless 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: Corsair - M75 Air Wireless or Logitech - MX Master 4?
Corsair - M75 Air Wireless leads the current Mars Score by 14.0 points.The more useful decision is the trade-off behind that result: compare max dpi, polling rate, weight against the way you will actually use the product.
Choose Corsair - M75 Air Wireless if…
Corsair - M75 Air Wireless has the measurable edge on polling rate hz, max dpi, weight g.
Choose Logitech - MX Master 4 if…
Logitech - MX Master 4 has the measurable edge on battery h, button count.
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 Corsair - M75 Air Wireless wins
- ▲Polling rate — 1500.00% more. 2000 Hz vs 125 Hz.
- ▲Max DPI — 225.00% more. 26000 vs 8000.
- ▲Weight — 90.00 g less. 60 vs 150.
Why Logitech - MX Master 4 wins
- ▲Battery — 1580.00% more. 1680 h vs 100 h.
- ▲Buttons — 1.00 more. 7 vs 6.
Spec comparison
Sensor
| Spec | Corsair - M75 Air Wireless | Logitech - MX Master 4 |
|---|---|---|
| Max DPI | 26000lead | 8000 |
| Max IPS | 650lead | 0 |
| Polling rate | 2000 Hzlead | 125 Hz |
Design
| Spec | Corsair - M75 Air Wireless | Logitech - MX Master 4 |
|---|---|---|
| Weight | 60 glead | 150 g |
| Buttons | 6 | 7lead |
| Shape | Symmetrical | Right-handed |
Connectivity
| Spec | Corsair - M75 Air Wireless | Logitech - MX Master 4 |
|---|---|---|
| Wireless | true | true |
| Battery | 100 h | 1680 hlead |