Surface Pro 4/Pro 3 Type Cover EC Technology Wireless Bluetooth Keyboard with Ultra Slim Magnetic Protective Cover/Holder/Stand, Trackpad, Built-in Battery for Surface Pro 3 / Pro 4 Tablet- Grey Exclusive design for Microsoft Surface Pro 3 and Surface Pro 4. Scissors foot type of key and ergonomic design, durable and friendly to fingers. Service life of key can up to 5 million times, can meet your efficient and soft typing. The bigger trackpad supports Windows 10 gestures, easy to browse Windows. Fashion sense for top business users and travelers- Perfect to give you the touch screen experience, without having to take your hands off the keyboard. Bluetooth performance- Providing high speed connection; When your device power on, just need 4 seconds to connect back automatically without repeated connections. Portable and Protective Cover, folding the cover back like a magazine, convenient to take. It functions as a protective shell, shielding the screen from bumps and scratches. Ultra Slim Magnetic Holder, convenient for watching video or reading eBooks. Also can give you perfect view while typing. With magnetic switch design, just need to power on the device once. For next time use, you just need to open the cover of this keyboard, it will wake up automatically. When not in use, it will turn into sleeping mode automatically which will feet the ultra long standby time up to 74 days.