Specifications: Product Name: Laser Projection KeyboardKeyboard size: 245*100mm/ 9.6x3.9inProjection light source: red laserBattery capacity: 2500mAhInput power: USB power / greater than 5V 1AOutput power: USB output 5V 1AProduct size: approx. 9 x 4.5 x 4.5 cm / 3.5 x 1.8 x 1.8 inchWeight: about 125gPackage list:Laser keyboard x 1, manual x 1, USB Cable x 1Features: Portable wireless virtual keyboard.English QWERTY keyboard layout.Connection method: Bluetooth connection / USB connectionProjection surface: non-reflective, opaque surface.The surface is flatter, the sensitivity is higher.Operating surface: any solid state plane.Main functions: mouse, mobile phone holder, mobile power, keyboard.Wired and wireless connection, USB cable connection, support plug and play.Smart standby function, hold it up a certain angle, the projection automatically closes.The keyboard area key combination controls the brightness of the projection area.The keyboard area combination key controls the size of the button sound.The keyboard is projected by laser.Projects a red keyboard on any flat surface for fast and accurate data input. It is cool when you type on the flat surface but without true keyboard, only red-light beam. More Accurate: With our calculated round key design, you won't hit the wrong key again.Mouse mode also supports zooming in and out of pictures and recognition of page turning gestures in WINDOWS7 and above.Applicable to: For Windows 7 / windows phone 7 and above / For IOS 8 osx and above / For Android 4.0 and above.