Professional Quena made by Juan Acha and guaranteed by professional Bolivian musicians. It has 6 orifices and a cut in window form in which they apply the inferior lip to produce the sound

Characteristics:
Material: Guayacan
Mouthpiece: U shape
Characteristics: Bone Ring
Frequency: 4. 40
Tuning: Em 4. 40

Approx. Measures:
Length: 37. 50 cm (14. 62")
Width: 2. 50 cm (0. 97")

The quena (quechua: qina, sometimes also written kena in English) is the traditional flute of the Andes. Usually made of bamboo, it has 6 finger holes and one thumb hole and it is open on both ends. To produce sound, the player closes the top end of the pipe with the flesh between his chin and lower lip, and blows a stream of air downward, along the axis of the pipe, over an elliptical notch cut into the end.