English QWERTY keyboard layout(Not support other language keyboard layout). Full size key pitch and shortcut keys for ease of operation Superior durability (No moving component inside). Without physical keyboard, small size, easy to carry, this projection keyboard can adapt to most of the working environment.Lithium-ion Polymer rechargeable battery. Easy connection via Bluetooth 2.0 HID profile Ver. or USB. connection to main devices , like Tablet PC,Smartphone, Desktop PC and Video game . As a input device, using the built-in infrared laser transmitter to project the standard keyboard on the working surface, you can locate the click position and input the information by the method of optical identification Compatible with: IOS4 or above, Android 2.1 or above, Windows XP or above, Windows Phone 7 or above, Mac OS Product Appearance Functional Description: Red light: long bright - Charging Off - Charging complete Blue light: Blinking - Pairing Status Off - paire Yellow light: flashes once - start normally USB connection mode: Method: USB device is connected USB Interface: standard USB Mini-B type Interface Specification: USB HID keyboard Input power: 1A 5V USB Charge Color: White Material: plastic Package Contents: 1 * Keyboard projector 1 * Data cable 1 * English instruction manual