TOMSENN CD408-06LD Ultra-Slim Aluminum Surface Pro 4 Wireless Bluetooth Keyboard Case Accessoies This type cover compatible Surface Pro 3 and Surface Pro 4 The keyboard is sturdy with enhanced magnetic stability along the fold so you can adjust it to the right angle and work on your lap, on the plane, or at your desk Comfortable typing precision control and navigation Ultra-slim 5mm Keyboard ,Easy portable for business and travel Magnetic type power charging:A Simple Magnetic Adapter Gives Your Charging Cables More Safe