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"This vintage 49
velocity sensitive key analogue synthesizer is one of the first multi-timbral keyboards. It has 6 voice polyphony as well as 6 VCO’s for great bass, lead, and pad modeling. It has MIDI and an onboard 6-track digital sequencer. It also has an arpeggiator that you can play along with sequences in real time. And it has a unison mode that makes the keyboard monophonic. It has been used in movies since the 80’s. It has the same Curtis circuitry that is found in its bigger brother, the Prophet 5."
It actually doesn't, but it still is a nice synth.
Update: the keyboard isn't velocity sensitive either. The Mult-Trak which has the same synth engine, however is. thanks to Cameron in the comments for catching this.