http://www.cromaretail.com/Hama-Optical ... 3-580.aspx The Hama Optical Wireless Mouse uses the reliable 2.4GHz wireless technology to offer you a stable and constant connection to your laptop or desktop. Besides the stable wireless connection, the 3 button mouse enables easy and efficient scrolling to go through long pages of documents and websites. Smart-Link technology helps for easy installation and the plug and play mouse is ready to work as soon as you plug in the nano receiver to your computer. The wireless optical mouse is suitable for use with both desktops as well as laptops. Key Features 2.4 GHz Wireless connectivity 3 Button mouse with nano receiver Separate on/off switch Smart-Link technology
