Dell Pro Wireless Keyboard and Mouse - KM5221W White - 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. Rest assured that this keyboard and mouse combo has been rigorously tested to ensure seamless connection to your Dell PC. 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. This product ships in approximately 1 days