Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Logitech - MX Master 4 | BenQ - EC1-CW |
|---|---|---|
| Battery | 1680 h | 70 h |
| Polling rate | 125 Hz | 1000 Hz |
| Max DPI | 8000 | 3200 |
| Weight | 150 g | 77 g |
| Buttons | 7 | 5 |
Between the MX Master 4 and EC1-CW, the MX Master 4 comes out ahead in battery / max dpi, while the EC1-CW wins on polling rate / weight. Overall, the MX Master 4 scores 50.9 and the EC1-CW scores 50.7 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (50.9 vs 50.7). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the MX Master 4 if you care most about battery / max dpi. The biggest gaps in its favor are battery, max dpi, buttons. The single most decisive one: Battery — 2300.00% more. 1680 h vs 70 h.
Pick the EC1-CW if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are polling rate, weight. The single most decisive one: Polling rate — 700.00% more. 1000 Hz vs 125 Hz.
Both ship with comparable wireless, 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: Logitech - MX Master 4 or BenQ - EC1-CW?
Logitech - MX Master 4 leads the current Mars Score by 0.2 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 Logitech - MX Master 4 if…
Logitech - MX Master 4 has the measurable edge on battery h, max dpi, button count.
Choose BenQ - EC1-CW if…
BenQ - EC1-CW has the measurable edge on polling rate hz, weight 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 Logitech - MX Master 4 wins
- ▲Battery — 2300.00% more. 1680 h vs 70 h.
- ▲Max DPI — 150.00% more. 8000 vs 3200.
- ▲Buttons — 2.00 more. 7 vs 5.
Why BenQ - EC1-CW wins
- ▲Polling rate — 700.00% more. 1000 Hz vs 125 Hz.
- ▲Weight — 73.00 g less. 77 vs 150.
Spec comparison
Sensor
| Spec | Logitech - MX Master 4 | BenQ - EC1-CW |
|---|---|---|
| Max DPI | 8000lead | 3200 |
| Max IPS | 0 | 400lead |
| Polling rate | 125 Hz | 1000 Hzlead |
Design
| Spec | Logitech - MX Master 4 | BenQ - EC1-CW |
|---|---|---|
| Weight | 150 g | 77 glead |
| Buttons | 7lead | 5 |
| Shape | Right-handed | Right-handed |
Connectivity
| Spec | Logitech - MX Master 4 | BenQ - EC1-CW |
|---|---|---|
| Wireless | true | true |
| Battery | 1680 hlead | 70 h |