Technical description: In C at A₄ = 452 Hz. Short octave: compass E₃, F₃, G₃, B₃, C₄ diatonically to C₆ and E₆ for right hand, 10 buttons, exposed pallets; 2 for left hand giving tonic and dominant chords plus release button. One stop for vibrato effect. Each button gives two pitches according to direction of bellows. Rectangular wooden ends.