BT wireless transmission technology, 10m effective distance, stable and fast. The keyboard lets you pair with up to three devices and easily switch connections between them. All it takes is a turn of the dial to type, switch, and keep on typing. Built-in phone and tablet stand keeps your screen at the right angle so you can view it while typing. Simple keyboard layout and arc button design, your fingertips and buttons fully fit, comfortable to use. It’s thin, lightweight, and easy to take wherever you need to be. You can type on your laptop, phone or tablet-with no cable necessary, so you can get work done anywhere. Compatible with Windows, Mac, Android, Chrome OS, iOS systems.