Hoʻohana nui ʻia kēia mau lima lima nokelepona wahome nā hiʻohiʻona wai ʻole a me ka wā.No nā kelepona ʻoihana waho, hiki iā mākou ke hoʻolako i nā mea hoʻohālikelikenā lima lima me ka UL i ʻāpono ʻia ʻo Cheimei ABS,anti-UV Lexan PC material, Carbon-loaded material and flame resistant material to meet all market demand.We also have different type microphone and speaker, like hearing-aid speaker, high-magnetic speaker and regular dynamic speaker with different resistance;No ka microphone, loaʻa iā mākou ke ʻano electret, type dynamic, carbon-equivalent a me ka walaʻau hōʻemi microphone no nā faila like ʻole.