CHERRY XANA, Laser, USB Type-A, 800 DPI CHERRY XANA. Movement detection technology: Laser, Device interface: USB Type-A, Movement resolution: 800 DPI, Buttons quantity: 5, Scroll type: Wheel http://www.expertreviews.co.uk/accessories/mice/50605/cherry-xana-corded-laser-mouse-review Cherry's Xana is pretty good-looking for a relatively inexpensive laser mouse. Two strips of plastic form the buttons, and their brushed steel appearance is good enough to fool most people. The ribbed rubber sides are also unusual and help you grip the... A reasonable mouse, but if your budget is limited, Microsoft's superior Sidewinder X5 costs only a few pounds more. ...