On the bottle of Prestone Quick Shine Detailer (a spray wax), there are two pictures. One has irregular shape beads and the other has round beads.
According to the explanation on the bottle, the irregular shape beads means no wax protection.
However, I saw a picture at a forum (Meguiars Online or Autopia) with irregular shape beads on a car. The poster said he applied NXT Tech Wax.