The unit is somewhat larger then the redesigned unit. This unit was also somewhat labor intensive to assemble with internal parts and external screws. The 4 bumps were replaced with a recessed cut as a sound funnel when the unit is placed face down on a surface. The new unit much smaller then the original design, so it is less bulky in your pocket. We eliminated screws replacing with snap assembly and simplified internal assembly.
New unit has a much more pleasing shape and sales appeal.