10-hole diatonic harmonica in the key of A major that combines the features of the historical, legendary Marine Band harmonica with a variety of state-of-the-art improvements, and produces greater volume and faster response while retaining the richness and power of the harmonica's classic sound. It has a sealed pear-wood comb plus rounded channel openings and outer corners for greater playing comfort, and it is assembled with 3 reed-plate screws and 4 cover screws to make it airtight and easy to service. The harmonica features improved reed profiles to increase reed life by over 200% and precision die punches to ensure all of the 20 brass reed plates with unparalleled air tightness. Length: 10 cm.