The OEM Verbatim Wireless Mini Travel Mouse in blue is designed for portability and ease of use. It features a 1600 dpi movement resolution, making it ideal for people on the go, particularly notebook and netbook users. Utilizing 2.4 GHz wireless technology, this mouse ensures reliable performance with no delays in cursor movement. It is compatible with Windows 7, Vista, and XP operating systems and conveniently plugs into a USB port. One AAA battery is included for immediate use.