The unit is for spares or repair, fully tested and as shown in second photo the whole 14th row does not work including few buttons from column 11. Please see pictures for proof of condition. SD card, manual and power supply included. 

The Yamaha Tenori-on sequencer is comprised of sixteen rows and sixteen columns that form a matrix of 256 LED lights. The principle is simple: the user presses an LED light on the touch screen, and each LED light represents a different instrument. A line goes from left to right following a pre-chosen rhythm, and when it reaches an active LED light the instrument linked to that button plays, just like on a regular sequencer.

The compact form makes it super handy so producers and musicians can take it everywhere with them. And thanks to the clean yet unique design, you'll get plenty of attention.