The mouse runs on two AA batteries that are included in the package; it doesn't support rechargeable batteries, but Logitech tells us that the two alkalines will power the mouse for 15 months with help from the "smart sleep" mode that automatically switches to consume less power during long periods of non-use.
The mouse's USB transceiver is both the innovative selling point as well as the 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 the company's brand-new Unifying receiver. This new technology lets you connect a single USB plug to six compatible mice and keyboards. 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 up USB ports formerly occupied by keyboards and mice. If you ever do need to take it out, the half-height USB receiver fits into its own compartment underneath the mouse for convenient storage.
Logitech doesn't include any third-party software in the bundle, but it does offer Logitech SetPoint for Windows and Mac that enables the side-to-side scrolling as well as extra customizable functionality for the middle button.
