Nkọwa vidiyo:
Ezubere maka ụlọ ọrụ akwa akwa, diski vibration + igwe na-enye nri bọket + igwe nkwakọ ngwaahịa kwụ ọtọ ma ọ bụ igwe na-ebu akpa akpa.
Otu dabara na-ewere otu diski vibration
Ngwa niile dabara n'ime bọket mbuli elu, na-ebuga n'ime otu akpa