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 Dark field 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 Rechargeable battery: Up to 70 days of power on a single charge