People tend to have several devices -- a laptop, a phone and maybe a tablet -- which is why Logitech keeps putting out "multidevice" Bluetooth keyboards. The company's newest model, the K380, which I'm using to type this, costs $40, £35 or AU$70 and is one of the best compact full-size wireless keyboards Logitech has created to date.
The first thing you notice about it is that it has a little bit of heft to it -- it weighs 14.92 ounces (423 g) with batteries -- which makes it suitable for use with a desktop computer, though it's still light and compact enough to fit into a bag and take on the go. Measuring 4.9 inches (124 mm) high, 10.9 inches (279 mm) wide, and 0.6 inches (16mm) deep (including feet). It comes in two colors -- dark gray or blue; I prefer the latter.
You can set it up to pair with three different devices and press one of the numbered "Easy-Switch" buttons in the top left corner of the keyboard to toggle between them. Pairing went smoothly with my test devices -- an, , , , , Dell laptop and an .
The keyboard can distinguish between Mac and Windows machines as well as Android and iOS devices and map keys to supported functions and shortcuts. It also supports connectivity with Chrome OS devices and.