Tracks practically anywhere Take this wireless travel mouse anywhere you need a great mouse. It works well on surfaces like glass tables in hotel rooms, glossy laminate tops, train and airplane tray tables, and yes, your jeans too. The Darkfield technology in this mouse uses the tiniest details to create a micro-road map of the surface, unlike traditional laser and optical mice that depend on irregularities on the surface to track mouse movements. Tests have proven that the mouse performs best on a glass surface with a minimum thickness of 4mm.Compact, sculpted shape The compact design allows you to take this portable mouse with you anywhere. Whether you’re at home, at work or simply on the go, you’ll never have to leave your mouse behind.Dual connectivity Connect this high-performance mouse via Bluetooth Smart wireless technology or Logitech Unifying Receiver.Easily switch between three devices The Easy-Switch™ technology allows you to pair a maximum of three computers and switch between them with the touch of a button. This wireless portable mouse can switch between your office computer, your home laptop, and a Microsoft Surface tablet. It cuts out the hassle of manual pairing whenever you switch devices, just a button and you are free to use it anywhere.