http://tokosini.com/shop.php?k=B0043T7FXE&c=all<br /><br />Logitech Wireless Trackball M570 With Leave-in USB Receiver<br /><br />Thumb-operated trackball and laser sensor for smooth, precise cursor control<br /><br />Works anywhere you do—even your sofa<br /><br />Powerful 30 ft. wireless range with tiny leave-in Logitech Unifying receiver<br /><br />Up to 18 months of power on a single AA battery
