Features: 1.Phosphor bronze alloy reed with the characteristic of corrosion resistance, ensuring stable performance and beautiful sound. 2.Strengthen the structure, so firm and stable, and not easy to loose. 3.C major 10 hole 20 tone for accurate tuning and beautiful tone. 4.Comfortable shape and texture, perfect for both beginners learning and professional performance. 5.Via this mouth Organ you can learn music, cultivate interest, relax and inspire in your spare time . And it is a good gift for friends, family and children. specification: Phosphor bronze alloy reed with the characteristic of corrosion resistance, ensuring stable performance and beautiful sound. Strengthen the structure, so firm and stable, and not easy to loose. C major 10 hole 20 tone for accurate tuning and beautiful tone. Comfortable shape and texture, perfect for both beginners learning and professional performance. Via this mouth Organ you can learn music, cultivate interest, relax and inspire in your spare time . And it is a good gift for friends, family and children. : Material: Stainless Steel + Resin + Phosphor Bronze Major: C Major (Key of C) Color:black,white,orange,blue,purplish red(Optional) Pitch: 1 2 3 4 5 6 7 8 9 10 Blow C3 E3 G3 C4 E4 G4 C5 E5 G5 C6 Draw D3 G3 B3 D4 F4 A4 B4 D5 F5 A5 (A4=440Hz,C4=Middle C) Size of Harmonica: Approx. 10.3cm x 2.9cm x 2.1cm (Approx. 4.1" x 1.1" x 0.8") Size of Harmonica Case: Approx. 11.9cm x 4.5cm x 2.9cm (Approx. 4.7" x 1.8" x 1.1") Weight: Approx.136g/4.8oz Package list: 1 x harmonica 1 x harmonica case 1 x cleaning cloth 1 x manual