The Dell Wireless Mouse 1000 dpi 18-month battery life 4N7H2 Retail Packaging 3 year Warranty from Dell offers you everyday wireless performance with excellent battery life. It is designed to create a clutter-free workspace with a reliable, plug-and-play RF wireless connection. This wireless mouse provides reliable performance and a stable wireless connection through the USB anchored RF wireless dongle. Its Plug and play feature allows for easy installation so users can get started using their mouse within minutes, with no confusing software or setup requirements. The small size and wireless performance help to make WM118 wireless optical mouse a great option for on-the-go users.