# Logitech K780 Multi-Device Wireless Keyboard Review
Verified Logitech K780 Specifications
We put the Logitech K780 through its paces. Here are the core specs:
- Length: 378.46 mm
- Width: 157.48 mm
- Height: 22.86 mm
- Weight: 861.83 g (1.9 lbs)
- Battery Life: 730 days (2x AAA batteries)
- Switch Type: Scissor-switch membrane
- Number of Keys: 96
- Connectivity: Bluetooth Smart / 2.4 GHz Unifying USB
- Form Factor: 96% (full-size, 6 rows)
- Multi-Device Pairing: 3 devices at once
- Backlighting: No
- Macro Keys: No
- Trackpad: No
- Numeric Keypad: Yes
- Supported OS: Windows, macOS, Chrome OS, iOS, Android
Design, Build & Physical Fit of the K780
Running your fingers across the K780, you feel a matte-black keyboard tray. It sits atop a soft-touch, grippy, speckled white plastic base. The circular keycaps share this grippy material. They also offer a pleasant concave shape, great for touch typists.
The chassis feels sturdy. It handles desktop use without issue. However, at 875 grams (1.9 lbs), this keyboard feels heavy. It is less suited for travel bags. On a crowded 48-inch desk, the K780 takes up a full-size footprint. Its overall dimensions are 22.86 x 157.48 x 378.46 mm. This leaves plenty of room for a mouse on either side.
An integrated rubberized tray runs its full length. This cradle holds phones and tablets. It fits even a 12.9-inch iPad Pro or Microsoft Surface Pro 4. It holds them stable, even when tapping the touchscreen. The keyboard lies flat. It features a sloping form factor to aid wrist alignment. This design helps reduce wrist strain during long typing sessions.
Core Performance & Feel of the Logitech K780
Typing on the K780 uses scissor-switch keys. These keys are exceptionally quiet. They provide satisfying tactile feedback. This makes them suitable for open-plan offices or late-night work. The keycaps are round and concave. This design offers quiet responsiveness, a bonus for touch typists.
Keystroke feel is light and responsive. We noticed only a slight mush at bottom-out. The keyboard excels at replacing touchscreen thumb-typing. Typing documents on an iPad feels much like using a laptop. Multi-key rollover works well for standard typing speeds. Fast typists will not miss characters.
However, this is not a gaming keyboard. Its latency is high. While fine for general desktop use, it creates issues for competitive gaming. The keyboard connects to smart TVs and gaming consoles via Bluetooth. But serious gamers should look elsewhere.
Power, Battery & Connectivity for the K780
Connecting the K780 is simple. It uses either Bluetooth Smart or a 2.4 GHz Unifying USB receiver. For PC users, the Unifying Receiver offered a more reliable, lag-free connection. Bluetooth on a Gigabyte laptop showed missing characters when typing fast. We saw 1 to 3 seconds of reconnection delay when typing after inactivity.
The keyboard is powered by two AAA batteries. They come pre-installed. These non-rechargeable batteries offer excellent life. Logitech claims up to 24 months of use. After two months of daily work, our battery indicator showed no drop. The Unifying Receiver dongle stores neatly under the battery panel.
The standout feature is multi-device pairing. It links up to three devices at once. Pairing is easy: hold F1, F2, or F3 until lights flash. Switching is fast and effortless. Just tap the corresponding F-key. This lets you move from desktop to phone to tablet in a blink.
Controls, Software & Daily Maintenance of the K780
The top row keys do double duty. They act as standard F-keys via the Fn button. They also serve as function shortcuts. These include Home, media controls, volume, Cortana search, and Delete. Dedicated F-row keys handle device switching. Three white buttons at the top left let you pair and switch devices with a tap.
The K780 works with every major platform. This includes Windows, macOS, Chrome OS, iOS, and Android. It recognizes the connected OS. Key functions adapt automatically. For example, Alt and Ctrl keys change based on the system. Customization options are limited. This keyboard offers no macro-programmable keys.
Dual-platform key legends sit on many keycaps. These include symbols for Start/Alt/CMD and secondary characters like @ or #. For single-OS users, this can create visual clutter. The K780 is not water resistant or spill-proof. Keep drinks away from it. Cleaning is easy, though. A dry microfiber cloth wipes it down quickly.
How the Logitech K780 Compares Head-to-Head
The Logitech K780 fills a specific niche, but other Logitech boards offer different trade-offs. Here is how it stacks up against close relatives.
Logitech K780 vs. Logitech K380
The K380 is a compact keyboard, a stark contrast to the K780. Our K780 offers a full-size numpad and an integrated device cradle. The K380 skips both, focusing on portability. If you need a numpad and a phone stand, the K780 wins. If small size is key, pick the K380.
Logitech K780 vs. Logitech MX Keys Mini
Sound and power are the main differences here. The K780 produces less keycap noise, especially around the edges. It uses replaceable AAA batteries, lasting two years. The MX Keys Mini uses a rechargeable USB-C battery. That one lasts up to six months. For quiet use and no charging hassle, the K780 is better. For a more modern power source and compact size, the MX Keys Mini has an edge.
Logitech K780 vs. Logitech MX Keys
Overall, the MX Keys is a better, more premium keyboard. It features backlighting, which the K780 lacks entirely. The MX Keys uses a rechargeable battery. This beats the K780's disposable AAAs. Keycaps on the MX Keys feel better. Its keys are also easier to actuate. If budget allows and you need backlighting, the MX Keys is the clear upgrade.
What I Like & What Could Be Better (Pros & Cons)
After extended use, the K780 reveals clear strengths and weaknesses. The best part is its ability to switch between three devices. Tapping a button to move from PC to phone is a real time-saver. The typing experience feels light and responsive. It's a joy for documents and messages.
Quiet typing is a major win. The scissor-switch keys make minimal noise. This means less disturbance in a busy office or shared home space. For PC users, the Unifying Receiver provided a solid, lag-free connection. The integrated cradle for phones and tablets is very handy. It holds even large devices firmly at a good angle. Plus, the two-year battery life means you rarely think about power.
On the flip side, the lack of backlighting is a big miss. Working in dim light becomes a challenge. The absence of macro keys and limited customization also restrict power users. It does not have an integrated trackpad, requiring a separate mouse. There is no dedicated Print Screen key. The matte-black tray on a speckled white base may not suit all setups.
Who Should Skip the Logitech K780 Keyboard
If you are a serious gamer, skip this keyboard. Its high latency makes it unsuitable for gaming. Look at dedicated gaming keyboards from brands like Razer or SteelSeries instead. Travelers should also avoid the K780. Its nearly 2-pound weight and full-size dimensions make it bulky. It is not travel-friendly. The integrated cradle does not detach. For portability, consider something like the Logitech K380.
Users who need key lights should pass on this. The K780 lacks backlighting entirely. This makes it poor for dark environments or Home Theater PC (HTPC) use. An MX Keys would be a better choice for backlit keys. Programmers needing complex macros should also look elsewhere. This board offers no macro programmability. Consider a mechanical keyboard from Keychron or a fully programmable option from Glorious if deep customization is a must.