Two AA batteries, included in the package, power the Logitech mouse. However, it doesn't support rechargeable batteries, but, according to Logitech, two alkaline batteries will power the mouse for 15 months with help from its "smart sleep" mode that automatically lowers its energy consumption during long periods of nonuse. Another feature Logitech doesn't advertise is that the mouse can run from a single battery, just in case you run out of juice or can only find one battery.
The mouse's USB transceiver is the innovative selling point as well as another reason why this mouse is so expensive. If you're completely dedicated to the Logitech brand of peripherals, you'll be happy to hear about its brand-new Unifying receiver. This new technology lets you connect a single USB plug to six compatible Unifying family mice and keyboards. The cool part is that each device comes with its own Unifying receiver, meaning that you can conceivably leave them all plugged into several different computers at home and work. It also frees USB ports formerly occupied by keyboards and mice. If you ever need to take it out, the USB micro receiver fits into a compartment underneath the mouse for convenient storage.
Logitech doesn't include any third-party software in the bundle, but it does offer its SetPoint for Windows and Mac app that enables the side-to-side scrolling as well as extra customizable functionality for the middle button.
