Use two AAA alkaline batteries (without batteries) With a power switch, you can turn off the power when not in use to save energy Slim design Key structure composition: key cap (including X-shaped scissor angle, double-arm extension floating angle) upper cover The key cap adopts: ABS PC laser material, Soft touch, quiet key press 78-key design, with 6 multimedia keys, and iPad and iPhone dedicated main control keys, browse search, brightness adjustment function, photo browsing, virtual keyboard and screen switch function shortcut keys. Thin floating button design naturally reveals a sense of fashion Beautiful appearance, stylish, black and white colors are available Compatible with computer windows operating system, such as windows2000, NT, XP, Vista, etc., no driver is required, as long as there is Bluetooth function, it can be installed directly Compatible with Mac ios operating system, iPad, Phone OS 4.0 without installing any drivers, can be used directly Compatible with windows mobile operating system, do not need to install any driver, can be used directly Specifications: Product size: 28.5*12*2.2CM Packing box size: 29*12.5*2.4CM Product weight: 0.38KG System switching: FN Q Apple system FN W Android system FN E windons system, Input method switching: command space, or press the small globe icon in the lower left corner. Various languages can be customized. Both mobile phones and tablets can be used, just connect to Bluetooth. If you don't support Bluetooth, please take pictures carefully. The keyboard is a Bluetooth keyboard, which can be directly connected to mobile phones, tablets, and various Bluetooth-enabled devices without installing any APP. If the computer does not have a Bluetooth function, an additional Bluetooth adapter is required to use "Purchase Yourself". The keyboard uses 2 AAA batteries. Package Included: 1*Keyboard       Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store