The Microsoft Mobile 4000 Wireless BlueTrack Mouse 1383, 1447 is a sleek and efficient mouse designed for Windows 7 users. With a maximum DPI of 4000, this touchpad features BlueTrack technology for precise tracking and a scroll wheel for easy navigation. The wireless connectivity and USB compatibility make it convenient for everyday use. The blue and black color scheme adds a stylish touch to any computer setup, while the sealed packaging ensures a brand new experience. Ideal for those looking for a reliable and high-performing mouse for their computing needs.