Item specificsis_customized: YesStyle: Slim，MiniType: 2.4Ghz WirelessBrand Name: IpazzportApplication: Desktop，Laptop，TabletModel Number: C1644RUFeatures:Special design for Russian input.3 in 1: Keyboard， mouse and touchpad， small and exquisite.2.4G wireless connection， 10M operating distance.82 Keys， full QWERTY keyboard， very convenient to type and operate.Full Function keys (F1 to F12) and Multi-Media Keys (Play， Pause， Next， Previous， Mute， Volume Up / Down).Real notebook-quality Touchpad (90 degree touchpad flip， multi-touch and scrolling bar， ultra sensitive).Unique Page up and Page down key for presentation.Equipped with USB receiver， no driver needed， plug and play.With LED light on the top.Powered by 2*AAA batteries (not included).Multiple indication light for signal， data transmission and power.Widely used for home entertainment， multi-media Education， training， conference， presentation， and so on.Specifications:Color: BlackModel: KP-810-19Connection: 2.4G RFMax. operating distance: 10mTransmit power: Max + 4dBmWork voltage: 3VPower supply: 2*AAA batteries (not included)Item size: 15.8 * 5.6 * 1.5cm / 6.2 * 2.2 * 0.6inItem weight: 65g / 2.3ozPackage size: 22*12.5*3.3cm / 8.7*4.9*1.3inPackage weight: 137g / 4.83ozSystem Requirements:Windows 2000Windows XPWindows Vista ，windows CE，windows 7Linux(Debian-3.1，Redhat-9.0 Ubuntu-8.10 Fedora-7.0 tested)AndroidMACPackage Contents:1 * Mini Wireless Keyboard1 * USB Extension Line1 * USB Receiver1 * User Manual