Bought this mouse with brand new laptop six months ago. Used daily with complete satisfaction until it ceased to work. The retractable mechanism requires repeated pulling of the cord by holding on to the mouse head and the USB connector and stretching the cord to its full extension. Because the cord is so delicate, it finally dislodged from the USB connector enough so that the electrical connection is severed. The one-year warranty does not cover wear and tear, so this is essentially a disposable item. If you are happy spending $20 for 6 months of use, then go for the Targus. If not, look elsewhere.