Logitech Wireless Mouse M305 (Victorian Wallpaper) (910-002459) Ergonomic design with soft rubber grip gives you exceptional comfort Plug-and-forget Nano receiver is so small it can stay in your laptop Logitech advanced 2.4 GHz wireless provides a powerful, reliable connection to your PC or Mac Intelligent battery management delivers months of use and added convenience High-definition optical tracking (1000 dpi) enables responsive and smooth cursor control