Features: Multifunction (3 in 1): wireless keyboard + Touchpad + mouse, small and exquisite. RF 2.4G wireless connection, 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 lightweight. 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: 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: less than 350mA Sleeping Current: less than 1mA Charging time: About 4 hours Operating temperature: -10C~+55C Battery type: Polymer Lithium-ion Battery Standby time: 500~700 hrs Transmission power: maximum +4dBM Size: about 150x60x10mm Package included: 1x Keyboard 1x USB Charging Cable 1x USB Receiver 1 x User Manual 1x Packing box