19th century.
Lightweight "Wha-Wha" cup with a very loud and refreshing sound. An excellent instrument for training the focus and alertness. It could be used for any kind of practice. Equally good for beginners and experienced practitioners. Plays very easy the fundamental or overtone by rubbing a mallet (wooden or suede sides).
Frequencies: 428-432hz (A4-8hz). Monaural beats range Theta. 1229-1233hz (D#6-15hz). Monaural beats range Theta. Other frequencies: 2309hz, 3606hz.
Includes complementary singing bowl cushion and singing bowl mallet R2.
