Logitech MX Keys S (Graphite, 920-011558) vs Logitech K780 Multi-Device Wireless Keyboard (Speckled White, 920-008025)
Would an integrated phone/tablet cradle and a narrower keyboard footprint help more, or do you prefer backlit keys and USB-C rechargeable upkeep?
Products compared
ASIN B0BKW3LB2B
Logitech MX Keys S (Graphite, 920-011558)
You want backlit keys with adjustable behavior and USB-C charging while continuing to type.
Last observed offer
$129.99
- Confirm offer eligibility on Amazon
Price checked
Observed condition: new. Coupon and subscription requirements unverified.
ASIN B01LZTBKBG
Logitech K780 Multi-Device Wireless Keyboard (Speckled White, 920-008025)
You want an integrated phone/tablet cradle for a device within Logitech's stated size/thickness bounds.
Last observed offer
$59.99
List Price: $69.99
- Confirm offer eligibility on Amazon
Size: 1.30
Price checked
Observed condition: new. Coupon and subscription requirements unverified.
Prices are per listed package. Pickoryx may earn a commission from qualifying purchases through the paid Amazon links on this page, at no added cost to you.
Published by Pickoryx · Published 2026-10-02 · Source checked 2026-10-02 08:07 UTC
The main trade-off
The K780 has an integrated device cradle, is narrower side-to-side, and uses replaceable AAA cells without backlighting. The MX Keys S is wider but shallower, has backlit keys, and can charge over USB-C while typing. The MX's holder arrangement is unconfirmed here; check your own stand needs before purchase.
Quick verdict
K780 is the documented choice for a built-in phone/tablet cradle and a narrower, deeper footprint; MX Keys S is the documented choice for backlit keys and USB-C charging while typing, with a wider, shallower footprint. Verify the MX Keys S holder arrangement if you need a stand. Neither feature list establishes typing-quality superiority.
Choose Logitech MX Keys S (Graphite, 920-011558) if
- You want backlit keys with adjustable behavior and USB-C charging while continuing to type.
- Your desk can accommodate the MX Keys S's wider, shallower footprint, and you have a separate mobile-device support plan if you need one.
Choose Logitech K780 Multi-Device Wireless Keyboard (Speckled White, 920-008025) if
- You want an integrated phone/tablet cradle for a device within Logitech's stated size/thickness bounds.
- A narrower side-to-side keyboard and replaceable AAA batteries without backlighting better fit your desk and maintenance preference.
When the recommendation changes
- If a built-in place to prop up a phone/tablet is important, K780 documents an integrated cradle for supported devices; MX Keys S holder support was not established in the sources checked, so verify the accessory/setup you intend to use.
- If low-light key illumination and charging without pausing typing matter, MX Keys S documents adjustable backlighting and USB-C charging while typing; if you prefer to avoid illumination and swap cells, K780 documents no backlight and two replaceable AAA batteries.
- Check device thickness up to 11.3 mm for the K780 cradle and compare both published desk footprints with your available space.
The differences that matter
| Decision point | Logitech MX Keys S (Graphite, 920-011558) | Logitech K780 Multi-Device Wireless Keyboard (Speckled White, 920-008025) |
|---|---|---|
| Device Cradle And Desk Footprint | The MX Keys S is 430.20 mm long side-to-side and 131.63 mm deep front-to-back. Whether a particular phone/tablet holder is built in is not established here; plan on a separate support only if you need one and confirm your preferred setup.[3] | The K780 is 380 mm side-to-side and 153 mm front-to-back. Its built-in rubber cradle holds phones through a 12-inch iPad class, with supported device thickness up to 11.3 mm.[4, 5] |
What this changes: K780 is narrower side-to-side but deeper front-to-back and directly accommodates a supported phone or tablet in its built-in cradle. MX Keys S is wider and shallower; its holder arrangement is unconfirmed by the sources used, so check that separately if a raised screen is part of your desk setup.[3, 4, 5] The better fit depends on your priorities | ||
| Power And Illumination Maintenance | MX Keys S has backlit keys with ambient/hand-proximity behavior, adjustable backlight settings, a rechargeable battery, and USB-C charging while typing. Backlighting is disabled in bright conditions and at low battery.[1, 2, 3] | K780 has no backlighting and uses two replaceable AAA batteries; Logitech support gives instructions to replace both when low.[5, 6] |
What this changes: Choose based on the upkeep you prefer: MX Keys S can illuminate keys and recharges by USB-C while you continue typing, with illumination affecting battery use; K780 avoids a backlight and uses two replaceable cells when needed. Manufacturer runtime claims are not directly compared here.[2, 3, 5, 6] The better fit depends on your priorities | ||
Best for your routine
Desk setups that need an integrated, supported phone/tablet cradle and favor a narrower keyboard width.
Best fit: Logitech K780 Multi-Device Wireless Keyboard (Speckled White, 920-008025)
Based on listed features, not comparative testing.
K780's official product page documents the built-in cradle and its specs are narrower side-to-side; MX Keys S holder support was not confirmed here.
Users who want illuminated keys and a rechargeable keyboard that can continue typing while connected to USB-C power.
Best fit: Logitech MX Keys S (Graphite, 920-011558)
Based on listed features, not comparative testing.
Logitech documents MX Keys S backlighting and charging while typing; K780 specs list no backlight and two replaceable cells.
Value and trade-offs
One or both observed offers have eligibility conditions, so no unrestricted price difference is shown.
Compare the current offers at checkout and pay for the desk-fit or maintenance features you will use; no fixed premium is assumed in this article.
Compare the current offers and condition at checkout; the available price information is not enough to say whether to buy now or wait.
Limitations
- The sources do not confirm a built-in device cradle for MX Keys S; verify the holder arrangement you want rather than treating this as a confirmed absence.
- No direct typing-quality, comfort, durability or battery-runtime comparison was performed. Manufacturer runtime figures depend on settings and are not treated as a side-by-side test.
- No fixed price, seller, condition, shipping term or Prime status is asserted; compare the exact product offers available to you at checkout.
Questions shoppers ask
Will my tablet fit in the K780 cradle?
Logitech says the cradle supports a device up to 11.3 mm thick and describes support for phones through a 12-inch iPad class. Check your tablet's thickness and orientation before buying.
Does MX Keys S have a built-in phone stand?
The Logitech material used here does not confirm an integrated cradle for MX Keys S. If you need a stand, verify whether your preferred separate support fits your workspace.
Do both keyboards use the same kind of battery?
No. MX Keys S has a rechargeable battery and can charge by USB-C while you type; K780 uses two replaceable AAA batteries and does not have backlit keys.
Methodology and sources
Compared documented cradle/footprint fit and power/illumination upkeep. Recommendations are feature-fit choices; no typing, comfort, reliability, or runtime winner was tested.
AI assisted research and drafting; product details were checked against the Logitech product and support documents cited here. No hands-on typing or battery test was conducted.
View 6 sources
- 1.MX Keys S — LogitechLogitech · Official specifications · Source checked 2026-10-02 08:06 UTC
Evidence used on this page
- Official US MX Keys S product family page; key feature sections for smart illumination (hands-approach and ambient adjustment), up to three devices and product identity. The page currently renders a different color selector; use it for family features, not as proof of the assigned graphite finish.: Documents MX Keys S family backlighting, multi-device switching and feature workflow; exact graphite/P/N identity is bridged separately by the assigned current product record and its 920-011558 variant URL.
- 2.Getting Started - MX Keys SLogitech Support · Official support · Source checked 2026-10-02 08:05 UTC
Evidence used on this page
- Sections ‘Choose how you want to connect’ and ‘Pair to a second computer’ (Bluetooth or included Logi Bolt; up to three computers); ‘Battery Status Notification’ (USB-C charging while typing); ‘Smart backlighting’ (ambient sensor, Options+ customization, and backlight disabled in bright rooms or at low battery).: Documents the connection choices, three-device switching, USB-C charge-while-typing and the backlight's controls/conditions for MX Keys S.
- 3.Specification - MX Keys SLogitech Support · Official support · Source checked 2026-10-02 08:06 UTC
Evidence used on this page
- Physical Specifications list keyboard 20.5 mm high x 131.63 mm wide x 430.20 mm long and 810 g; battery specification lists 1500 mAh rechargeable battery, backlighting yes, and USB-A-to-USB-C power input. General product specification says runtime varies with backlight setting; no cross-model runtime comparison used.: MX Keys S support specifications provide physical footprint orientation and rechargeable/backlit power details.
- 4.Logitech K780 Multi-Device Wireless KeyboardLogitech · Official specifications · Source checked 2026-10-02 08:05 UTC
Evidence used on this page
- US product page URL selects P/N 920-008025; page lists Speckled White and sections ‘Multi-device flow,’ ‘Compact with an integrated cradle,’ and ‘Flexible and compatible’: up to three devices, rubber cradle accommodating phones through a 12-inch iPad, Bluetooth/Unifying receiver, and OS families.: Exact US K780 product page bridges the assigned Speckled White product number and documents its cradle, multi-device use and connectivity.
- 5.Especificações técnicas do teclado bluetooth K780 para múltiplos dispositivosLogitech Support · Official support · Source checked 2026-10-02 08:06 UTC
Evidence used on this page
- Official K780 specs: keyboard dimensions 22 x 380 x 153 mm; replaceable 2 x AAA; no backlight; smart-device holder accepts up to 11.3 mm thickness and up to 12-inch iPad class. Portuguese-language support page; numeric facts are product-family specifications, not region-specific price/offer claims.: Official K780 specifications establish footprint orientation, replaceable-cell arrangement, no backlight and supported holder thickness.
- 6.K780 keyboard battery life and replacementLogitech Support · Official support · Source checked 2026-10-02 08:05 UTC
Evidence used on this page
- Battery level and replace batteries sections: status LED changes when power is low; remove the cover and replace spent batteries with two new AAA cells.: Official support instructions confirm the K780 maintenance action is replacement of two AAA cells.