Multi-Device Keyboard: this wireless keyboard can connect up to 3 different devices via 2.4G USB wireless and Bluetooth simultaneously and you can press the corresponding channel button to switch among 3 devices easily, which is efficient and convenient. Ultra Slim and Portable Keyboard: The dimension of this keyboard is 36.6 * 12.5* 1.63 CM, which is a super space saver and easy to carry around, looks sleek and elegant. And with the ergonomic degrees incline, the keyboard offers you with more comfortable using experience.