About this item Enhance your all-day productivity with this RF 2.4GHz wireless full-sized keyboard and mouse. Programmable keys and scroll wheel allow you to gain quick access to your frequently used shortcuts The native 1600 DPI mouse offers preset DPIs of up to 4000 adjustable via the Dell Peripheral Manager, offering accurate tracking across a wide range of display resolutions Work with one of the quietest wireless keyboards whether on a conference call or in proximity with others. Symmetrically designed, the wireless mouse is great for both left and right-handed users The Dell Pro Wireless Keyboard and Mouse is built to last with one of the industry’s leading battery lives at up to 36 months The keyboard offers 128-bit AES (Advanced Encryption Standard) encryption protecting your data transmission across your PCs and devices, providing you with a secure connection while typing. What’s in the box - Dell Pro Wireless Keyboard and Mouse – KM5221W,USB Receiver, Batteries (Keyboard 2 x AAA / Mouse 1 x AA), Documentation