How it works:
· You have to first wash the bowl and filled with some water.
· When you rub your finger straight, it gives shank sound.
· When you rub the side of your finger, it gives the sound of bell.
. When you rub the finger and water shaking, it gives cuckoo sound

Please send your buying procedure on sumit78kyahoo.com with rate, terms & condition you offer.

as per the Muslim religious book, it produce 101 different sound and made by some muslim person.
we know about only three only.
it is 250-300 yrs old

free hand testing till your satisfaction.

please find the video at
http://www.youtube.com/watch?v=vPI8M7jg0FE&feature=youtu.be

best regards
sumit