Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Finalmouse - ULX | Logitech - MX Master 4 |
|---|---|---|
| Polling rate | 4000 Hz | 125 Hz |
| Battery | 100 h | 1680 h |
| Max DPI | 26000 | 8000 |
| Weight | 39 g | 150 g |
| Buttons | 6 | 7 |
Between the ULX and MX Master 4, the ULX comes out ahead in polling rate / max dpi, while the MX Master 4 wins on battery / buttons. Overall, the ULX scores 71.9 and the MX Master 4 scores 50.9 on our Mars Score.
Which should you buy?
The ULX is the clear pick on raw spec strength, leading by 21.0 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 ULX 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 — 3100.00% more. 4000 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 ULX 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: Finalmouse - ULX or Logitech - MX Master 4?
Finalmouse - ULX leads the current Mars Score by 21.0 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 Finalmouse - ULX if…
Finalmouse - ULX 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 Finalmouse - ULX wins
- ▲Polling rate — 3100.00% more. 4000 Hz vs 125 Hz.
- ▲Max DPI — 225.00% more. 26000 vs 8000.
- ▲Weight — 111.00 g less. 39 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 | Finalmouse - ULX | Logitech - MX Master 4 |
|---|---|---|
| Max DPI | 26000lead | 8000 |
| Max IPS | 650lead | 0 |
| Polling rate | 4000 Hzlead | 125 Hz |
Design
| Spec | Finalmouse - ULX | Logitech - MX Master 4 |
|---|---|---|
| Weight | 39 glead | 150 g |
| Buttons | 6 | 7lead |
| Shape | Symmetrical | Right-handed |
Connectivity
| Spec | Finalmouse - ULX | Logitech - MX Master 4 |
|---|---|---|
| Wireless | true | true |
| Battery | 100 h | 1680 hlead |