Karnotech 2.4G Bluetooth Wireless Rechargeable Keyboard Ultra Slim Portable for Windows, iOS, Android, Mac OS X (VMK-42 White) More Silent: Mute level rivals Apple laptop devices. More user-friendly: Simple Bluetooth connection for anyone. More Functional: Designed with 12 multimedia keys of F1 to F12. More Ergonomic: Common keyboard layout, 11.25 by 4.875 inches, 3/8" thick, decent heft and rigidity. More Comfortable: Ultra slim chocolate keycaps & scissor x frame structure design, high quality sense of touch.