1、It can connect three computers simultaneously via Logitech Unifying receiver or BT wireless technology, and it\u0027s easy to switch between paired devices with just one click. 2、The Unifying receiver is compact and can connect up to 6 Logitech Unifying devices simultaneously. Simply plug into your computer, it can connect multiple mice and keyboards via a single USB port on the same computer. 3、Smart backlight, the keys light up the moment your hands approach. The backlit can automatically adjust brightness to suit changing lighting conditions. 4、The creative input dial adapts to the APP you\u0027re using, giving you instant access to specific functions for the task at hand. 5、The touch-sensitive control lets you feel your way through your creation-for a more efficient and immersive workflow. Features: It can connect three computers simultaneously via Logitech Unifying receiver or BT wireless technology, and it's easy to switch between paired devices with just one click. The Unifying receiver is compact and can connect up to 6 Logitech Unifying devices simultaneously. Simply plug into your computer, it can connect multiple mice and keyboards via a single USB port on the same computer. Smart backlight, the keys light up the moment your hands approach. The backlit can automatically adjust brightness to suit changing lighting conditions. The creative input dial adapts to the APP you're using, giving you instant access to specific functions for the task at hand. The touch-sensitive control lets you feel your way through your creation-for a more efficient and immersive workflow. The unique spherical button concave design matches the natural shape of the fingers, and the rounded outer edge provides feedback to the fingertip, making the tapping smoother. Specification: Brand: Logitech Model: Craft Color: Dark gery Connection mode: BT/Unifying 2.4GHz wireless technology Transmission distance: 10m System requirement: Logitech Options on Windows 7 or later, macOS 10.11 or later Item size: 43 * 14.9 * 3.2cm /16.93 * 5.87 * 1.26in Item weight: Approx. 960g /33.86oz Packing list: 1 * Keyboard 1 * Unifying receiver 1 * Charging cable 1 * User manual 1 * Keyboard 1 * Unifying receiver 1 * Charging cable 1 * User manual