Beltuna Euro IV MIDI piano accordian in great condition, full size accordion with 41 treble keys measuring in at a 19-1/4″ keyboard and has 120 bass buttons.It has 4 sets of handmade Artigiana treble reeds LMMM with a beautiful musette sound and has 5 sets of handmade bass reeds. This Euro IV has 9 treble switches and palm master, along with 4 bass switches and a mute, built-in Musictech King Major MIDI system, along with Musictech/Sennheiser stereo mic system with separate right and left hand volume controls. The 9V battery for the mic system has just been replaced with a new battery. This accordion has tight compression and weighs approximately 11.6KG.This accordion also comes with a like new hard shell carrying case with protective blanket.I do not have the musictech midi box,but everything works and is in perfect condition.The seinheiser mic system works only on the treble side as it has been disconnected for the bass side due to it being used in a band where the bass on the accordion is not used.For more info please do not hesitate to call.Needless to say that this accordion is one of the best in the business and commands a beautiful sound and very powerful output.