SUNDELY FBI Throat Vibration Mic Earpiece/headset PTT for Samsung Andriod Smartphone 3.5mm FBI Throat Vibration Mic Earpiece/headset PTT for Samsung Andriod Smartphone 3.5mm 1-pin jack, 1 spare earbud included, PTT button to start or stop talking, not for volume control or select music Behold II (SGH-t939), Captivate (SGH-i897), Continuum (SCH-i400), Convoy(SCH-U640), Epic 4G, Fascinate, Flight(SGH-A797), Focus (SGH-i917), Freeform (II SCH-r360) Galaxy Indulge (SCH-r910), Galaxy S(GT-I9000), Galaxy S 4G (SGH-t959V), Galaxy S2 II(SGH-T989) I9100, Galaxy S3 III I9300, Galaxy S5360, Galaxy Tab, Gem (SCH-i100) Instinct (SPH-m800), Jack(i637), Intensity II(U460), Mesmerize(SCH-I500), Messager III (SCH-r570), Mythic (SGH-a897), Nexus S (GT-i9020), Omnia II (SCH-i920), Restore (SPH-m570), Rogue (SCH-u960), Sidekick 4G (SGH-t839), Skyrocket(SGH-I727), Suede (SCH-r710), Tab(GT-P7510), Trance (SCH-u490), Transform (SPH-m920), TwoStep (SCH-r470), Vibrant (SGH-t959)