USB Optical Mouse with Gel Pad Hand Rest, 3 Button, Scroll, 54&rdquo; Cord, Win98 Thru 10. COMFORT AND STYLE : For those who want comfort and style in a computer mouse without a bunch of extra buttons to figure out, here's a classic model with a modern look and feel. THREE FUNCTION : It has the three basic function buttons found on most traditional mice (left, right, and center) and scroll wheel. NOT REQUIRE A MOUSEPAD : It is an LED optical mouse which does not require a mousepad unless you are using it on a surface that doesn't respond well to the light. THE LONG 54" cord ensures you'll have plenty of room to move the mouse around in your work space. If you are an all-day user, you'll enjoy the soft gel pad that makes up about half of the top of the mouse. SIZE : Mouse body measures approximately 5"L x 2.5"W.