Due to it's high quality 37 key keyboard 3 set of reeds on treble and 4 set of reeds on bass side, this instrument is in particular adequate for standard or skilled players, teachers at music schools and students. It is an accordion with 7 registers on treble side, 3 registers on bass side, 37 keys and 96 bass buttons. Included are case and shoulder straps. Color: Blue.SpecsKeys Treble Side: 37Buttons Bass Side: 96Registers Treble Side: 7Registers Bass Side: 3Range: f - f'''Weight: 9,6 kgDimensions H x D: 454 x 200 x 400 mmInclusive: Case and Straps.