Logitech K780 Multi Device Wireless Keyboard vs Logitech MX Keys
Decision sheet: the facts that decide it
Logitech K780 Multi-Device Wireless Keyboard: 4 of 6 decision facts sourced.
Logitech MX Keys: 3 of 6 decision facts sourced. Missing: Power, Capacity, Dimensions.
| Logitech K780 Multi-Device Wireless Keyboard | Logitech MX Keys | |
|---|---|---|
| Price today | Price not yet checked | Price not yet checked |
| Dimensions | AAA bestbuy.com | Not yet sourced |
| Weight | 30.86 ounces bestbuy.com | 28.57 ounces bestbuy.com |
| Warranty | 1 year bestbuy.com | 1 year bestbuy.com |
| Starting MSRP | $59.99 logitech.com | $129.99 logitech.com |
Not yet sourced — Logitech K780 Multi-Device Wireless Keyboard: Power, Capacity. Logitech MX Keys: Power, Capacity, Dimensions. No manufacturer, official or retailer source we read publishes these yet; we don't estimate them.
Pick Logitech K780 Multi-Device Wireless Keyboard if
- Lower starting price — $59.99 vs $129.99 (logitech.com, logitech.com)
Pick Logitech MX Keys if
- Lighter — 28.57 ounces vs 30.86 ounces (bestbuy.com, bestbuy.com)
Skip both if
- Neither publishes power or capacity yet.
Verdict: The K780 Multi-Device Wireless Keyboard offers lower starting price ($59.99 vs $129.99); the MX Keys counters with lighter (28.57 ounces vs 30.86 ounces). Neither publishes power or capacity yet.
Provisional pick: Logitech MX Keys — not enough sourced decision facts for Logitech MX Keys. We don't rank on specs we can't verify.
Spec-by-spec comparison
| Logitech K780 Multi Device Wireless Keyboard | Logitech MX Keys | |
|---|---|---|
| Battery life | 24 months | — |
| Dimensions | AAA | — |
| Weight | 30.86 ounces | 28.57 ounces |
| Material | ABS | ABS |
| Warranty | 1 year | 1 year |
| Starting MSRP | $59.99 | $129.99 |
Logitech K780 Multi Device Wireless Keyboard
What works
- Built-in top groove holds a phone or tablet upright while the keyboard stays paired to a computer
- Switches among three devices over Bluetooth or the included Unifying receiver
- Runs on two user-replaceable AAA cells instead of a sealed rechargeable pack
What doesn't
- No key backlight, so legends are hard to read in a dark room
- Plastic deck and flatter keycaps are less stable for long typing than the MX Keys cupped keys
Logitech MX Keys
What works
- Proximity sensor turns the backlight on when hands approach the keys
- Spherically dished low-profile keys sit on a metal top plate
- Easy-Switch covers three computers, and Logitech Flow can move the cursor between them
What doesn't
- Sealed rechargeable pack cannot be swapped the way the K780's AAA cells can
- No phone or tablet groove, and the full-size numpad layout needs more desk width
Bottom line
Provisional pick: Logitech MX Keys — not enough sourced decision facts for Logitech MX Keys.
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