Features: Bluetooth-compatible +2.4Ghz dual-mode wireless keyboard with backlit Larger touchpad, dual- mouse left and right button design, support multi-finger touch-, more convenient operation Adjustable mouse speed, two-speed adjustable Palm-sized gaming keyboard, independent left and right buttons-, easy to use Ergonomic design QWERTY- keyboard Innovative full-screen scrolling function Specifications: Product Name: A8 Keyboard Product color: Black Product features: 2.4G+Bluetooth-compatible dual-mode Battery: Need 2xAAA Batteries (Not Included) Operating range: up to 10meters Transmit power: +5db -Max. Working voltage: 3.3V Computer system requirements: For Windows-XP/2000 Vista- /Windows-CE / Windows-7 For Linux-(Debian-3.1,Redhat-9.0 Ubuntu-8.10 Fedora-7.0 test) Dimensions: As Pictures Weight: 110g Package Includes: 1 x Mini Air Mouse Keyboard 1 x USB Adapter 1 x Instruction Manual note: Due to the different monitor- and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation- due to manual measurement.