Model No.: MU2 Series, 3D Wheel RF Ball Type Mouse - Digital radio technology for the ultimate cordless freedom - Most Power Saving design for Wireless Optical Mouse with "Touch On" features - Fits right and left hands - Convenient scroll wheel for Scroll Bar controlling on OS Models: - MU2 PA: RF Cordless Mouse, 27MHZ, 1 channel, Multi-ID, PS/2 Model - MU2 CA: RF Cordless Mouse, 27MHZ, 1 channel, Multi-ID, USB Model
