this mouse is pretty good i ordered it for a good price it shipped fast and got it in a few daysa few things about this mouse is1. the blue led lights in it stay on no matter what  i have it plugged into the back of my pc2. the dpi switch is 400/800/1600 i have mine on 8003. the scroll wheel you can feel the bumps in it but there soft bumps not hard clicks4. it came in its own box but all the papers in it were in chinese not english 

Question: What is the size of the mouse?
Answer: this mouse is pretty good