Ziplinq's revolutionary designed compact mouse is perfect for mobile users on the go! With its precision optical sensor, that tracks movements 1500 times per second, this mouse will track accurately on any surface. This small and portable mouse easily works on even the smallest mobile work area. Product Features includes Easily extends to over 2' by pulling both ends. Simply pull again and it quickly retracts back into its housing; Lightweight, streamlined design for easy travel and storage; USB Ready. Just plug-and-play in your computer's USB port; Durable ABS plastic housing Less than 4" long when retracted! Light and very portable, suitable for mobile professionals; Ergonomic contour design for comfortable use; Easily works on even the smallest mobile work area; Zoom & 38 function wheel set-up choices.