Microsoft 3000 3-Button Wireless Optical Scroll Mouse w/Tilt Wheel Technology (Steel Blue) Microsoft Wireless Optical Mouse 3000 K80-00055 General Features: Steel blue color Three (3) customizable buttons Four way scrolling Tilt Wheel Technology PC and Mac compatible Ergonomic design USB - PS/2 receiver interface Built for right handed and left handed users Microsoft Optical Technology Powered by two (2) AA batteries (included) Regulatory Approvals: FCC WEEE