Logitech Signature Slim K950 Wireless Keyboard vs Logitech MX Keys S Wireless Keyboard
Get the Logitech MX Keys S. Unless you don't need a backlight and want to spend less — then the Signature Slim K950.
Logitech Signature Slim K950 Wireless Keyboard
A slim, extremely quiet full-size keyboard that switches between three devices, for less than the MX Keys S. No backlight and no recharging.
Logitech MX Keys S Wireless Keyboard
The best keyboard for most desks: lovely, quiet low-profile keys, a solid build, a backlight that wakes as your hands get close, and three devices at the press of a key.
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Both are slim, quiet full-size keyboards that switch between three devices. The MX Keys S adds a backlight, a rechargeable battery and a more solid, precise feel; the K950 runs on AAA batteries with no backlight and cheaper-feeling keycaps, but it's extremely quiet and costs less.
- —You don't type in the dark.
- —You never want to charge a keyboard.
- —You want to spend less.
- —You work in dim light.
- —You want the best typing feel.
- —You'd rather recharge than buy batteries.
What verified owners report
Only reviews from checked buyers count, and every 1–3 star review is read by us. How we do this
Owners love switching between computers, tablets and phones, and find it comfortable, quiet and slim. One owner's keyboard sometimes doesn't reconnect to its receiver after a restart.
- ✓Easy switching between devices
- ✓Comfortable to type on
- ✓Quiet
None came up often enough to list.
Owners love the smooth key feel, the solid, weighty build and the backlight that comes on as their hands approach. The main complaint is keys that stick, squeak or come loose, followed by a backlight that makes the labels hard to read.
- ✓Smooth, comfortable keys
- ✓Solid, weighty build
- ✓Backlight that wakes as your hands approach
- −Keys stick, squeak or come loose
- −Backlit labels hard to read, or backlight annoyances
Key differences
Pros and cons
- +Extremely quiet, slim keys
- +Switches between three devices
- +Full size with a number pad
- −No backlight.
- −Runs on two AAA batteries, with no recharging or cable.
- −The keycaps feel a little cheap.
- −Only simple shortcuts can be set in the software.
- +Lovely, quiet low-profile keys
- +Backlight that wakes as your hands approach
- +Switches between three devices
- −About 10 days per charge with the backlight on; months with it off.
- −Too much delay for competitive gaming.
- −Big and heavy to carry about.
For the curious
A deeper look at full specs.
Backlight
The MX Keys S has one; the K950 doesn't.
Power
AAA batteries for up to 36 months on the K950; rechargeable on the MX Keys S.
Both
Full size, three devices, Bolt receiver or Bluetooth.
Technical specifications
| Signature Slim K950 | Logitech MX Keys S | |
|---|---|---|
| Layout | Full size with number pad; tilt legs for an 8° angle | Full size with number pad |
| Connection | Logi Bolt USB receiver (included) or Bluetooth 5.1, 10 m range | Bluetooth or Logi Bolt receiver; up to 3 devices |
| Devices | Easy-Switch between 3; works with Logitech Flow mice | — |
| Battery | 2 AAA (included), up to 36 months | Rechargeable, 1,500 mAh: up to 10 days with backlight, 5 months without |
| Keys | Printed for Windows, Mac and ChromeOS | — |
| Size | 433.8 × 134.8 × 23.1 mm | 430 × 132 × 21 mm |
| Weight | 685 g with batteries | 810 g |
| Software | Logi Options+ on Windows and macOS | — |
| Backlight | — | Yes, turns on as your hands approach, adjusts to room light |
From the maker's spec sheet for the Signature Slim K950 (Logitech Signature Slim K950) and the Logitech MX Keys S (MX Keys S (920-011584)), checked October 2026. Versions sold in other countries can differ slightly.
- Is the Signature Slim K950 worth it?
- Is the Logitech MX Keys S worth it?
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How we reached this verdict
We compared independent expert reviews with the manufacturer's specifications, then checked it's sold at a major retailer where you live. We don't test products ourselves.
Sources: RTINGS, RTINGS, Engadget, Trusted Reviews, manufacturer specifications.
Owner reports for the Signature Slim K950: 18 verified buyer ratings at Currys and Best Buy (Canada), read October 2026.
Owner reports for the Logitech MX Keys S: 326 verified buyer ratings at Currys, Otto (Germany), Best Buy (Canada) and LDLC (France), read October 2026.