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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) 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-month battery life means you might even forget the keyboard needs batteries. 1 Wireless range may vary depending on operating environment and computer setup. Assumes up to two hours typing per day. Actual battery life will vary with use, settings and environmental conditions.

| Design | Keyboard style | Straight | |
| Product colour | Black | Wrist rest | No |
| Features | Wireless range | 10 m | |
| Keyboard | Connectivity technology | Wireless | |
| Device interface | RF Wireless | Frequency band | 2.4 GHz |
| Hot keys | Yes | Keyboard form factor | Mini |
| Keyboard keys operating life | 5 million characters | Keyboard language | US International |
| Keyboard layout | QWERTY | Noise level | 55 dB |
| Numeric keypad | No | On/off switch | Yes |
| Pointing device | Touchpad | Programmable hot keys | No |
| Purpose | HTPC | Recommended usage | Universal |
| Legal Information | Country of Origin | Japan | |
| EU ECCN Code | N/A | Tariff No. | 8471606000 |
| UNSPSC Code | 43211706 | US ECCN Code | EAR99 |
| Logistics data | Master (outer) case gross weight | 965 g | |
| Master (outer) case height | 8 cm | Master (outer) case length | 24.7 cm |
| Master (outer) case width | 19 cm | Mouse | Mouse battery life |
| 18 month(s) | Mouse battery type | AA | |
| Mouse included | No | Package dimensions (verified) | Depth Verified |
| 15.4 cm | Gross Weight Verified | 0.512 kg | |
| Height Verified | 3.4 cm | Width Verified | 36.9 cm |
| Packaging content | Batteries included | Yes | |
| Packaging content | 2 AA batteries (pre-installed), Keyboard, Logitech Unifying receiver, User documentation | User guide | Yes |
| Power | Keyboard battery type | AA | |
| Number of batteries (keyboard) | 2 | Number of batteries supported | 2 |
| Power source type | Battery | Service life of battery | 18 month(s) |
| Product dimensions | Net Weight (Product, kg) | 0.5 kg | |
| System requirements | Mobile operating systems supported | Android | |
| Other operating systems supported | ChromeOS | Windows operating systems supported | Yes |
| Vendor information | Brand Name | Logitech | |
| Warranty | 2 Year(s) |
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