Lappairage is very simple and well explained in the user manual; it takes a few seconds. This allows me to have the keyboard on his lap, while my iPad is on the living room coffee table. This is much more comfortable as you step must type some text or even much WHEN IT should really write. Best of all, it also sappaire with the iPhone, which is much more comfortable to write messages when you want meet an urgent email.
Note that some shortcut keys are not always functional (Esc, F3, F4) it only work on iMac. It is powered by two AAA batteries that can be rechargeable batteries (Not included). The distance is given functional dune dozen meters, but unless lon screensaver uses a projector on a wall, this is of little use. If it does, the Bluetooth keyboard becomes very convenient, as it is no longer useful to move.