wired headset mono hands-free earphone 3.5mm headphone boom microphone single earbud [black] for total wireless samsung galaxy s9+ - tracfone lg premier lte - tracfone lg stylo 3 neva wireless wired headset mono hands-free earphone 3.5mm headphone boom microphone single earbud [black]. fonus hands-free earpiece provides excellent comfort, fit, and sound quality. on off switch will function on phones that support this feature. the detachable ear loop rotates 360 degrees and can be used on either the left or the right ear, gold plated 3.5mm connector. bendable noise-reducing boom of these headsets provide optimal fit and superior call clarity in nearly every environment.compatible with most headset-ready mobile devices with a 3.5-mm jack. comes in bulk packaging (non-retail package).