Logitech Mk540 Advanced Keyboard and Mouse

LOGITECH MK540 ADVANCED KEYBOARD AND MOUSE Plug-and-play setup: The keyboard and mouse connect instantly to a single Logitech Unifying USB receiver. Reliable connection: It uses an advanced 2.4 GHz wireless connection with a range of up to 10 meters (33 feet). Long battery life: The keyboard runs on two AA batteries with a 36-month battery life, while the mouse runs on one AA battery that lasts up to 18 months. Auto-sleep functio