Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Ducky - One 3 TKL | Logitech - MX Keys S |
|---|---|---|
| Hot-swappable | true | false |
| Size | TKL | Full |
| Wireless | false | true |
Between the One 3 TKL and MX Keys S, the One 3 TKL comes out ahead in hot-swappable, while the MX Keys S wins on size / wireless. Overall, the One 3 TKL scores 64.5 and the MX Keys S scores 38.3 on our Mars Score.
Which should you buy?
The One 3 TKL is the clear pick on raw spec strength, leading by 26.2 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 One 3 TKL if you care most about hot-swappable. The biggest gaps in its favor are hot-swappable. The single most decisive one: Has Hot-swappable.
Pick the MX Keys S if you care most about size / wireless. Its strongest claims are size, wireless. The single most decisive one: Size: Full (vs TKL).
Both ship with comparable polling rate, rotary knob, so those specs do not separate the two — focus on the differences below.
Bottom line: the One 3 TKL 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: Ducky - One 3 TKL or Logitech - MX Keys S?
Ducky - One 3 TKL leads the current Mars Score by 26.2 points.The more useful decision is the trade-off behind that result: compare size, wireless, hot-swappable against the way you will actually use the product.
Choose Ducky - One 3 TKL if…
Ducky - One 3 TKL has the measurable edge on is hot swap.
Choose Logitech - MX Keys S if…
Logitech - MX Keys S has the measurable edge on size, is wireless.
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 Ducky - One 3 TKL wins
- ▲Has Hot-swappable.
Why Logitech - MX Keys S wins
- ▲Size: Full (vs TKL).
- ▲Wireless: true (vs false).
Spec comparison
Switches
| Spec | Ducky - One 3 TKL | Logitech - MX Keys S |
|---|---|---|
| Switch type | Cherry MX | Scissor |
| Hot-swappable | truelead | false |
Layout & Build
| Spec | Ducky - One 3 TKL | Logitech - MX Keys S |
|---|---|---|
| Size | TKL | Fulllead |
| RGB | truelead | false |
| Rotary knob | false | false |
| Case material | Plastic | Plastic |
Connectivity
| Spec | Ducky - One 3 TKL | Logitech - MX Keys S |
|---|---|---|
| Wireless | false | truelead |
| 2.4 GHz | false | false |
| Battery | 0 h | 240 hlead |
| Polling rate | 1000 Hz | 1000 Hz |