For sale is a used KORG Volca Keys.  It was purchased brand new in April of this year.  It's in excellent condition.  It's analog so it sounds really great and is really fun to play around with.  It has different voice modes, a touch keypad, a sequencer, a delay effect, and save slots for patterns.  Plenty of knobs for controlling sound.  It runs on batteries or power supply. Power supply is included and was purchased separetly (originally $30).  Internal speaker for complete mobile playability.  Has MIDI In for controlling with external controllers (sequencers, MIDI controllers) and an In/Out jacks for use with other Volca instruments or the Korg Electribe 2.  

Synthesizer comes with power supply, manual, original box. Send questions if you got em!  
Price is firm.

video was made using an external looper to capture a "bass pad", a detuned lead, and a saw wave LFO "arpeggio" type of sound.  Synth is really easy to play around with.