Like new with all original packaging. It even has the sticker over the screen. 
A powerful MIDI 2.0 controller keyboard, Keystage offers unparalleled control, Polyphonic Aftertouch, MPE compatibility, and exceptional touch response. Enjoy instant OLED visual feedback, a powerful arpeggiator, chord modes, integrated audio outputs, and seamless Ableton Live & Korg Gadget integration. Lightweight & portable, Keystage integrates effortlessly with most modern DAWs and includes a powerful software bundle to amplify your musical journey.

Keyboard
49 keys or 61 keys Polytouch* keyboard
Features velocity sensitivity, aftertouch, and polyphonic aftertouch
Velocity curves: 21 (-10 to +10)
Octave range: 7 (-3 to +3)

Controllers
Pitch bend wheel, modulation wheel, parameter control knobs × 8
VOLUME knob, SETTINGS button, WRITE button, EXIT button, SHIFT button, ARP button, CHORD button, VALUE ^/ buttons, VALUE dial, PAGE —/+ buttons, transport buttons, TEMPO button, OCTAVE —/+ buttons

Display
Main display: Organic EL (electro-luminescence) display
Sub display: Organic EL displays × 8

Scenes
16

Arpeggiator
Arpeggio rhythm patterns: 20

Chord mode
Preset chord sets: 32
User chord sets: 32

I/O
USB port, MIDI (IN, OUT connectors), EXPRESSION jack, DAMPER jack

Audio output
AUDIO OUT (L/MONO, R): 6.3 mm TS phone jack (unbalanced)
Headphones: 6.3 mm stereo phone jack

Control inputs
Damper (half-damper supported)
Expression

MIDI
In, out

USB
Type B

MIDI/audio interface
MIDI: 1 in/1 out
Audio: 2 ch out
Audio format: 44.1 kHz, 16-bit

Power
USB bus power or AC adapter (9 V DC, : Korg KA350, sold separately)
Power consumption: 5 V/500 mA or less (when powered via USB), 4w (when using an AC adapter)

Dimensions
Keystage-49: 814 × 234 × 82 mm
Keystage-61: 979 × 234 × 82 mm

Included items
USB cable (Type A-Type B), expansion plate, Quick Start Guide.