This YAMAHA single harmonica is brand new and unused. Product number: YH-15SN It was opened to check the quality, but is brand new and unused. About this item: For kindergarten, nursery, and elementary school use. A harmonica designed for younger students, prioritizing playability and safety. Single-sided, 15-hole design. Product Size: 5.9 x 1.3 x 0.9 inches (150 x 34 x 22.4 mm). Unisex. Recommended Age: 3 years and up. Country of Manufacture: Japan. A harmonica that produces sound simply by blowing or drawing air.