Insignia - Wireless USB Optical Mouse - Silver Blue LED optical sensor. With 1600 dpi resolution enables precise movements. Rubber scroll wheel. Allows you to easily navigate through documents and Web content. 5 buttons. Simplify operation. Ambidextrous design. For comfortable left- or right-handed use. 2.4GHz wireless technology. Provides a wireless range up to 32.8', so you can work in a preferred location.