The ReTrak Retractable Optical Mini Travel Mouse is perfect for people on the go. With integrated opto-mechanical technology it delivers precise pointing and smooth cursor movement. The compact design is great for briefcases, carry-on's or even fits in your pocket! Plus, the attached retractable cord keeps it all tangle-free. 91.5 cm Total Expanded Length. Highly accurate 800 dpi resolution. Scroll wheel/combo 3rd button. Easy grip rubber coating. Auto zoom and scroll.