Using Silent Technology, silent click switches and rubber covers, this Silent Ergonomic Wireless Blue LED Mouse is truly silent. The ergonomic design with thumb support makes this mouse easy and comfortable to use all day long. An adjustable dpi button lets you easily switch between 800, 1300 and 1600 dpi while back and forward buttons let you easily navigate between pages in your browser. The 2.4GHz wireless performance allows lag-free cursor movement. Blue LED technology allows you to point and click on more surfaces than other mice - from a glass table to the granite kitchen counter. The mouse connects to the computer via a nano receiver, small enough to plug in and leave connected so it's great for computing on-the-go. Mouse uses a USB-A interface and is compatible with Windows XP, Vista and Windows 7 and higher; Mac OS X 10.4 and higher; Linux Kernel 2.6 and higher.