ITEM NAME:3.5mm Male to Female M/F Stereo Audio Plug CTIA to OMTP Headphone Adapter #gib Store Home Promotion Hot Item Add to Fav.In other words, OMTP earphones are compatible with CTIA phones and also CTIA earphones compatible with OMTP phones. Compatible plug standard: OMTP to CTIA or CTIA to OMTP. There are OMTP and CTIA two standards.
