WORK FOR LONGER WITH LONG BATTERY LIFE Basic AA and AAA batteries are included with the keyboard and mouse KEYBOARD AND MOUSE COMBO The Logitech MK270 Wireless Keyboard and Mouse Combo includes a full size keyboard and a precision mouse so you can work comfortably away from your computer EASY STORAGE The MK270 includes a plug and forget receiver that cleverly stores inside your mouse for safekeeping. The USB toggle is located in the storage compartment of the mouse