CROSS COMPUTER CONTROL Game changing capacity to navigate seamlessly on three computers, and copy paste text, images, and files from one to the other using Logitech FLOW DUAL CONNECTIVITY Use with up to three Windows or Mac computers and laptops via included Unifying receiver or Bluetooth Smart wireless technology HYPER FAST SCROLLING Scroll through long documents or web pages faster and easier. Or press the wheel and shift to click to click mode for precise navigation.Wireless technology: Advanced 2.4 GHz wireless technology WORKS ANYWHERE 4000 dpi Darkfield sensor tracks flawlessly virtually anywhere, even on glass. Mouse Dimensions-1.3 x 2.4 x 3.9. Unifying Receiver-0.2 x 0.5 x 0.5 inches RECHARGABLE BATTERY Up to 70 days of power on a single charge Graphite, wireless