Model No.: MUJ Series Wireless 3D Wheel Optical 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: - MUJ PT: 3D Wheel RF-Optical Mouse, 400 dpi 27MHZ, 1 channel, 256 ID, w/2*AA dry Batteries, 3 Button with Touch On Features, PS/2 Model - MUJ CT: 3D Wheel RF-Optical Mouse, 400 dpi 27MHZ, 1 channel, 256 ID, w/2*AA dry Batteries, 3 Button with Touch On Features, USB + PS/2 Combo Model
