This is the "P-13E" chromatic pitch pipe (pitch pipe) by Tombo. It is a complete 13-tone chromatic type with the international standard A=440Hz. It can be widely used for tuning Western instruments (guitar, ukulele, violin, etc.), Japanese instruments (shamisen, koto, etc.), choral singing, and shigin (Japanese poetry recitation). It features accurate tuning that utilizes the manufacturing technology of reed instruments. It is compact and convenient to carry (soft case included). - Size: Approximately 7.5cm Thank you for viewing.