Features: 3 in 1 multifunction: wireless keyboard + Touchpad + mouse, small and exquisite. RF 2.4G wireless connection, enjoy up to 10m operating distance. Ultra sensitive touchpad with 90-degree flip design. Built-in rechargeable polymer Lithium-ion battery. USB receiver, no driver needed, plug and play. Auto sleep and wake-up function of the keyboard. Ergonomic design, compact and light weight. Can be used for PC, Notebook, Smart TV, HTPC, Android TV BOX, etc. System Requirements: for Windows 2000 for Windows XP for Windows Vista, Windows CE, Windows 7, Windows 8 for Linux(Debian-3.1, Redhat-9.0, Ubuntu-8.10, Fedora-7.0 tested) for Android OS(with standard USB interface) Specifications: Brand: Rii Color: Black RF mode: 2.4Ghz Operating distance: Up to 10 meters Built-in battery capacity: 450mAH Charging voltage: 4.2V ~ 5.05V Charging current: 350mA Sleeping Current: 1mA Charging time: About 4 hours Item size: Approx. 151 * 59 * 12.5mm / 5.9 * 2.3 * 0.5in Item weight: Approx. 86g / 3.03oz Package size: Approx. 18 * 10.5 * 2.5cm / 7.1 * 4.1 * 0.98in Package weight: Approx. 140g / 4.9oz Package included: 1 * Keyboard 1 * USB Charging Cable 1 * USB Receiver 1 * User Manual