3.5mm Male Jack to 2.5mm Female Jack 3 Ring 4-Pole Audio Adapter Converter for Headphone Earphone Headse

Product parameters: Interface process: gold plating Model :2.5mm internal thread to 3.5mm external thread adapter Shell material: aluminum Shell process: plating Applicable equipment: mobile phone/computer and other old 2.5mm headphone/speaker Please note: This adapter is compatible with all functional earphones without microphone types.If your earphone has microphone function, please check whether it is OMTP standard interface or CTIA standard interface, because this adapter only applies to OMTP standard interface earphone, not compatible with CTIA standard interface earphone. Differences between OMTP standard jack and CTIA standard jack earphone/earphone: 1. The quadrupole connection sequence of OMTP standard jack earphone is: left channel, right channel, microphone, ground wire 2. The quadrupole connection sequence of CTIA standard jack earphone is: left channel, right channel, ground wire and microphone Therefore, before purchasing this adapter, check carefully whether your headphones are standard OMTP or CTIA. Of course, if your headphones don't have a microphone, don't worry, they'll work fine. After-sales policy: we will provide 12 months of quality warranty service!