The Logitech® Wireless Touch Keyboard K400 Plus lets you experience PC-to-TV entertainment the way you Watch video, browse the web, chat with friends and much more. The all-in-one keyboard with touchpad ends the hassle—and clutter—of multiple devices. And a 10-meter (33-foot)¹ wireless range ensures your fun won’t be interrupted. Comfortable, quiet keys and a large (3.5-inch) touchpad make navigating entertainment effortless. Even setup is a snap thanks to the tiny, plug-and-play Unifying receiver. The 18-month² battery life means you might even forget the keyboard needs batteries. 1 Wireless range may vary depending on operating environment and computer setup. ² Assumes up to two hours typing per day. Actual battery life will vary with use, settings and environmental conditions.
Specifications
| Recommended usage | Home | 
| Device interface | RF Wireless | 
| Keyboard layout | QWERTZ | 
| Keyboard language | German | 
| Pointing device | Touchpad | 
| Numeric keypad | N | 
| Windows keys | Y | 
| Connectivity technology | Wireless | 
| Purpose | PC/Server | 
| Frequency band | 2.4 GHz | 
| Backlight | N | 
| Keyboard style | Straight | 
| Wrist rest | N | 
| Product colour | Black | 
| Surface coloration | Monotone | 
| Built-in display | N | 
| LED indicators | N | 
| Wireless range | 10 m | 
| Power source type | Battery | 
| Keyboard battery type | AA | 
| Number of batteries (keyboard) | 2 | 
| Battery technology | Alkaline | 
| Battery capacity | 2000 mAh | 
| Service life of battery | 18 month(s) | 
| Rechargeable | N | 
| Battery type | AA | 
| Number of batteries supported | 2 | 
| Mouse included | N | 
| Windows operating systems supported | Windows 10,Windows 11 | 
| Mobile operating systems supported | Android 7.0,Android 7.1,Android 7.1.2,Android 8.0,Android 9.0,Android 10.0,Android 10 | 
| Other operating systems supported | Chrome | 
| Keyboard dimensions (WxDxH) | 354.3 x 139.9 x 23 mm | 
| Keyboard weight | 390 g | 
| Receiver included | Y | 
| Wireless receiver interface | USB | 
| Receiver type | Unifying receiver | 
| Unifying receiver | Y | 
| Receiver dimensions (WxDxH) | 14.4 x 18.7 x 6.1 mm | 
| Receiver weight | 1.8 g | 
| Number of products included | 1 pc(s) | 
| Package width | 31 mm | 
| Package depth | 370 mm | 
| Package height | 153 mm | 
| Package weight | 530 g | 
| Master (outer) case width | 171 mm | 
| Master (outer) case length | 379 mm | 
| Master (outer) case height | 321 mm | 
| Master (outer) case gross weight | 5.76 kg | 
| Internal | N | 
	
