Hohner Mattia IV 120 BK; piano accordion; 120 bass keys; 41 treble keys; 4 treble choirs; 13 treble registers; 5 bass choirs; 7 bass registers; tipo a mano reed plates; double octave tuning; with cassotto; chin register with dual switching option; seamless sound projection with omni sound; narrow keyboard for fast playing; dimensions (W x D): 440 x 185 mm; weight: 11.5 kg; color: black; incl. Alcara leather strap and hard case Phoenix. Alcantara leather strap and Phoenix hard case