Ko te pūnaha tapahi BK4 hou a IECHO he mea hanga mō te tapahi paparanga kotahi (he torutoru ngā paparanga), ka taea te mahi aunoa me te tika, pērā i te tapahi mā roto, te mira, te haehae V, te tohu, me ētahi atu. Ka taea te whakamahi whānui i roto i ngā ahumahi o roto o te motuka, te pānuitanga, ngā taonga me ngā mea hanga tahi, me ētahi atu. Nā tōna tino tika me tōna whai huatanga, ka whakaratohia e te pūnaha tapahi BK4 ngā otinga tapahi aunoa ki ngā momo ahumahi.
Ka taea e te tere tapahi te eke ki te 1800mm/s. Mā te waeine whakahaere nekehanga IECHO MC ka tere ake te oma o te mīhini. Ka taea te whakarerekē ngāwari i ngā momo nekehanga rerekē hei whakahaere i ngā hua rerekē.
Mā te whakamahi i te pūnaha hou a IECHO hei waihanga i tētahi taiao mahi whakamarie, tata ki te 65dB i te aratau penapena pūngao.
Mā te mana whakahaere atamai o te kaikawe rauemi ka taea te tapahi me te kohikohi i ngā hua katoa, ka taea te tapahi tonu mō te hua roa rawa, ka penapena mahi, ka pai ake te whai hua o te whakaputa.