LOGITECH MK235 Wireless Keyboard and Mouse Combo 2.4GHz Wireless Compact Long Battery Life 8 Shortcut keysFAMILIAR KEYBOARD LAYOUT No learning curve involved. You will enjoy the comfort and simplicity of a traditional full size keyboard layout from day one. LONG BATTERY LIFE Type as long as three years between battery changes and use your mouse for up to a year before replacing the battery. The three year battery life prediction is based on approximately two million keystrokes per year in an office environment. Like all batteries, your experience may vary