Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | SteelSeries - Aerox 9 Wireless | BenQ - EC3-CW |
|---|---|---|
| Max DPI | 18000 | 3200 |
| Battery | 180 h | 70 h |
| Weight | 89 g | 75 g |
| Buttons | 18 | 5 |
Between the Aerox 9 Wireless and EC3-CW, the Aerox 9 Wireless comes out ahead in max dpi / battery, while the EC3-CW wins on weight. Overall, the Aerox 9 Wireless scores 55.3 and the EC3-CW scores 51.1 on our Mars Score.
Which should you buy?
The Aerox 9 Wireless edges ahead on the Mars Score (55.3 vs 51.1), but the 4.2-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Aerox 9 Wireless if you care most about max dpi / battery. The biggest gaps in its favor are max dpi, battery, buttons. The single most decisive one: Max DPI — 462.50% more. 18000 vs 3200.
Pick the EC3-CW if you carry the device everywhere and weight or thickness has been the deciding factor before. Its strongest claims are weight. The single most decisive one: Weight — 14.00 g less. 75 vs 89.
Both ship with comparable polling rate, 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: SteelSeries - Aerox 9 Wireless or BenQ - EC3-CW?
SteelSeries - Aerox 9 Wireless leads the current Mars Score by 4.2 points.The more useful decision is the trade-off behind that result: compare max dpi, weight against the way you will actually use the product.
Choose SteelSeries - Aerox 9 Wireless if…
SteelSeries - Aerox 9 Wireless has the measurable edge on max dpi, battery h, button count.
Choose BenQ - EC3-CW if…
BenQ - EC3-CW has the measurable edge on 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 SteelSeries - Aerox 9 Wireless wins
- ▲Max DPI — 462.50% more. 18000 vs 3200.
- ▲Battery — 157.14% more. 180 h vs 70 h.
- ▲Buttons — 13.00 more. 18 vs 5.
Why BenQ - EC3-CW wins
- ▲Weight — 14.00 g less. 75 vs 89.
Spec comparison
Sensor
| Spec | SteelSeries - Aerox 9 Wireless | BenQ - EC3-CW |
|---|---|---|
| Max DPI | 18000lead | 3200 |
| Max IPS | 400 | 650lead |
| Polling rate | 1000 Hz | 1000 Hz |
Design
| Spec | SteelSeries - Aerox 9 Wireless | BenQ - EC3-CW |
|---|---|---|
| Weight | 89 g | 75 glead |
| Buttons | 18lead | 5 |
| Shape | Right-handed | Right-handed |
Connectivity
| Spec | SteelSeries - Aerox 9 Wireless | BenQ - EC3-CW |
|---|---|---|
| Wireless | true | true |
| Battery | 180 hlead | 70 h |