Boseno 24 Holes Double Tremolo Harmonica, Key of C Prime (Black) beautiful sound, praised the world: Chile imports of phosphor bronze alloy sound spring , corrosion resistance, not easy to aging off, making the whole harp playing more stable, more saving effort. Sound elegent, beautiful and strong enough, voice are stability and natural, is a good choose for beginner and professional piano playing! Stable structure, air tightness is good: the harmonica choose the multi-point support, harmonica inside are the 11 screws, with 2 pieces fixed flat to be total of 13 single screw fixation, making the overall structure is more robust, to ensure the air tightness of the harmonica. Yellow brass thickened cover, laser marking, Dazzle black high light handled, solemn and elegant, very highlight texture; plywood structure, more convenient to use a variety of playing skills. The production of food grade resin ABS engineering materials using the harmonica comb, the waterproof performance is good, non-toxic. cover plate shell engraved with the notes flag, everywhere for you into consideration, more convenient for beginners.