Boseno 10 Holes Double Tremolo Harmonica， Key of C (Blue)[Product Information]- Imported phosphor bronze reed(Sound Spring):Copper content 99.99%，anticorrosion，antifatigue with brighter tone.
- Germany equipment:The Sino-German joint venture DMG CNC planer spring machine，guarantee the sound spring intonation.
- Thicken Copper plate，1mm copper plate makes the harmonica sound more clear and melodious.
- harmonica Cover design:thicken copper cover，fine printing design with enough hardness，it is not easy to deform with long time playing.
- harmonica use High quality ABS resin frets.Use Food grade ABS innocuity engineering resins frets，Waterproof and healthy.
