Use the Microsoft Surface Keyboard SC Bluetooth Gray together with your Surface Book and Surface Pro. The keyboard has Bluetooth Smart technology, so you don't need a receiver to connect to your Surface Book or Surface Pro. The top of the keyboard consists of aluminum, ensuring that it stands firm while typing. In addition, the keyboard is compact and will easily fit it in your bag. Lastly, thanks to the low profile keys, you won't make noise when you're typing a long email or report.