Wireless Keyboard,Womail USB Handheld Bluetooth 3.0 Keyboard for All 7-10 inch Android Windows Tablet Universal Bluetooth keyboard for Android and Window tablets. Dimension:200mmx125mm/7.87"X4.92" Lightweight, compact, easy to carry and handle. Operate distance up to 10 meters. Press FN + A to switch to Android system, Press FN + S to switch to Windows system.