The Lenovo Mini Optical Mouse S10A utilizes optical tracking technology for precision control. It is offered in a mini-size shape that fits comfortably in either hand. This mouse has an integrated wheel scrolling device that also acts as a programmable third button. There is no mechanical ball to get dusty or dirty. It does not require a mousepad and works on many types of surfaces. The Lenovo Mini Optical Mouse S10A is designed with IdeaPad elements that match your IdeaPad perfectly.