The B32 controller has 32 buttons as you can never have too many buttons. The layout is easy to use for larger trigger sequencer (especially with a few of them), control multiple select inputs from the minifonion or convenient control of multiple values.
Shipping includes a short ribbon cable for connecting the controller to the master or to the previous controller. If you want to place the controller further away from the master, you can purchaser longer ribbon cables here in the shop.
You can connect up to 16 controllers to each DROID master.