BLACK In-Ear Retractable Mono Headset Wired Single Earbud Earphone with Microphone for Boost Mobile ZTE Speed, Boost Mobile ZTE Warp Sequent, Boost Mobile ZTE Warp Sync, Cricket HTC One SV, Cricket HTC One V Premium sound and voice quality. Allows user to talk and listen to music hands free. In-Ear design. Retractable cable is compact and can be stored on. Excellent Bass Response. Tangle free design. 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. This is a MONO headset with ONE Earbud only. NOTE: Please pull the retractable cords on both sides simultaneously for a better retraction. Comes with extra ear gels. Might come in Bulk packaging.