WholeTone Revolution Synthesiser Chromatic Keyboard In Box (Korg N5) SN 01000404

via this auction

"The WholeTone Revolution has the Chromatic / Janko keyboard. They Synths engine is the same as the Korg N5.

Muto Music Method・MUTO KEN layout

(halftone arrangement + whole tone arrangement)

Number of Keys

88 keys

Width of 1 Octave

(Key-pitch)

approx.11.5cm (20mm)"