The K780 Multi-Device is a full-featured all-in-one keyboard with an elegant number pad design that works seamlessly with smartphones and tablets. Type quietly and comfortably and switch effortlessly between all devices used for text input. Compatible with PC, Mac, Chrome OS, Android and iOS. When you're writing a report on your computer, the Easy Switch button makes it easy to switch to your phone or tablet and type a message. Quiet, comfortable and familiar typing with Logitech's PerfectStroke button design. Robust design with large, carefully crafted concave keys, a practical number pad and all the usual special keys. Various devices such as smartphones and the 30 cm (12 inch) iPad Pro can be kept stable at a comfortable reading distance and at the same time always within reach. Long battery life of 24 months thanks to two included AAA batteries, with automatic standby mode, on/off switch and battery level indicator.