Summary: This mouse works fine, bluetooth is convenient for laptops that have built in bluetooth (just make sure that the bluetooth radio is on). However, I was hoping for more of a trackball and less of a mouse. Yes, it CAN do both. But, in trackball mode you lose any built in way of scrolling without switching back to mouse mode. Thus, it's almost always more useful to use the trackball as the 360 degree scrollball than to put it in to trackball pointer mode.
Pros: Accurate Tracking, Comfortable Design, Glides Smoothly, Great Features, Works On Any Surface
Summary: Use this when my laptop is being used as a laptop. Gives good control with no cord. Can balance it on the arm of a chair or hold it in my hand and use it as a trackball. Much better than the pad built into laptops. Just wish you could press click the ball like a real trackball.