Mice have come a long way since the early days of the Macintosh, with its innovative roller-balled brick. Fast forward 22 years and meet the Logitech MX Revolution. With innovative scrolling technology, rechargeable batteries, and improvements that make it easier to do common tasks, the MX Revolution is definitely a big step in the right direction. Whether or not this mouse is a revolution is up for debate, as it doesn't completely change the way we interact with our computers like the Macintosh mouse did, but it's clearly an important step in the evolution of one mankind's most indispensable tools Input Device:Connectivity Technology Wireless Movement Detection Technology Laser Features Zoom wheel, One-Touch Search Port(s) / Connector(s) Required 1, 1 USB 4 pin USB Type A Min Operating system Microsoft Windows XP Battery technology Lithium ion Installed battery qty 2 Cable(s) Included 1 Form factor External Total Price Rs. 7500/-