The different models

model 1    standard, just sine wave, an agreable smooth tone
model 2    similar, but added to play all principal waves: sine,triangle,square, saw
model 3   (best two sticks) to play all midi devices and their functions
model 4     2 sticks to play live all kind of samples and process them
model 5    control and modify,incl vocoder,the live speaking or singing,