A keyboard and a large mouse combo for device swapping and clicking across your work and personal computers. This set contains the Logitech Signature MK955 Slim Combo of Keyboard and Large Mouse with Logi Options Plus App (Black). Usb Bolt Receiver (Outside the Devices - In the Kbd Tray), Pre-Installed Keyboard with 2 x Aaa Batteries, Pre-Installed Mouse with Aa Batteries, 4 x 4-inch Iid, Qsg Printed On the Keyboard Tray, and Limited 1-Year Warranty.