VAIO WMS30/P Wireless Mouse Features - A simple, ultra-modern design and wireless RF technology makes this mouse both comfortable and easy to use The USB receiver fits into the mouse battery compartment for easy storage when not in use Unlike larger dongles that can be distracting or get in the way, this ultra-slim wireless receiver seamlessly blends in with the contours of your PC to maintain its sleek profile An 800dpi laser captures every movement and ensures smooth, pinpoint navigation on virtually any surface