Logitech K400 Plus Wireless Touch Keyboard with Integrated Touchpad

Overall DimensionsHeight: 139.9 mmWidth: 354.3 mmDepth: 23.5 mmWeight: 390g (with batteries)Touchpad DimensionsHeight: 76 mmWidth: 47 mmSystem RequirementsOS/Platform Support Windows 7, Windows 8, Windows 10 or laterAndroid 5.0 or laterChrome OSUSB portTechnical SpecificationsConnection Type: Logitech Unifying protocol (2.4GHz)Special Keys: Mute, Volume Down, Volume UpConnect / Power: On/Off SwitchBattery Details: 2 x AABattery Life (not rechargeable): Up to 18 monthsKey life: Up to 5 million keystrokesTyping noise: Within 55 dBA for all keysWireless range: 10 m (33 ft)Package ContentsWireless Touch KeyboardUnifying receiver2 AA batteries (pre-installed)User documentation