Flat Cable Black Handsfree Mono Headset Single Earphone Earbud Microphone for T-Mobile Samsung Galaxy S Blaze 4G, T-Mobile Samsung Galaxy S Relay 4G, T-Mobile Samsung Gravity Q, T-Mobile Samsung Google Nexus S FONUS(TM) Flat Cable Handsfree Mono Headset with Microphone. Premium sound and voice quality. Allows user to talk and listen to music hands free. Tangle free flat cable desing is very convenient. Excellent Bass Response. In-line microphone in ABS housing. Adopted a highly conductive gold plated 3.5mm plug. Works on any device that have a 3.5mm port. Comes with earbud cushions for a convenient fit This is a MONO headset with ONE Earbud only. - On/Off button to receive and end the call without using your phone.