"With the Sandberg Wireless Mouse Saver, you can finally get rid of that annoying cable.
Simply plug the supplied USB dongle into the appropriate socket on your computer and get started.
Switch between 800, 1200 and 1600 DPI, depending on whether you need speed or precision.
Lightweight, simple and easy to take anywhere.
Works for both left and right-handed users.
Features:2.4 GHz GFSK technologyRange: up to 10 meters4 buttonsoptical resolution: 800/1200/1600 DPIscroll wheelautomatic energy-saving mode after 10 minutes of inactivityRequires 2 AAA batteries (not included)Receiver: USB-A interface"