Strasser Professional Alpine Flowers Accordion - 4x rows/3x reeds, 46x treble keys, 15x bass keys, (7x basses, 1x additional bass, 7x chords). Dimensions: 38 x 20cm. Patented SKL treble mechanism, entirely padded straps, hand strap adjustor, bellows protection, changeable bass for the first row, plush case. Tuning: G-C-F-B