Custom Productivity Experience: The MK850 wireless combo gives you increased productivity thanks to Logitech software OPTIONS, allowing you to assign 12 keys and buttons to your favourite shortcuts Built for Comfort: The keyboard is designed for all-day typing with oversized, cushioned palm rest, familiar deep-profile keys, curved key frame and adjustable tilt legs. Two AAA batteries with a 3-year lifespan Precision Mouse Control: Contoured mouse's soft rubber surface fits perfectly into your palm, hyper-fast scrolling wheel to fly through webpages/documents. Works with Windows, Mac, ChromeOS, Android Multiple Device Compatibility: Swapping between PCs, laptops & Macs is simple; type and switch seamlessly between tablets, computers, phone; Pair up to 3 individual devices via Bluetooth/USB receiver Logitech DuoLink: To get the most out of the MK850 wireless combo, download the Logitech Options software Duolink, link your keyboard and mouse together for custom functionality, smarter navi