The OEM Verbatim Wireless Mini Travel Mouse in Graphite is designed for portability and convenience. This optical mouse features a 1600 dpi movement resolution, making it ideal for users on the go, including notebook and netbook users. With 2.4 GHz wireless technology, it offers reliable performance without delays in cursor movement. It is compatible with Windows 7, Vista, and XP operating systems and plugs directly into a USB port. The mouse includes 1 AAA battery for immediate use.