Elecom Wired Headset, 3.5mm 4-Pole Mini Plug, In-Ear, Single Ear, with Microphone, Conversion Cable (4-Pole To 3-Pole), Black, HS-EP21MTBK

This single-ear, earplug-style wired headset features a microphone arm and is ideal for web conferences, video calls, online learning, and voice chat during online games. It features a φ3.5mm 4-pole mini plug (CTIA standard compliant) and can be used directly with smartphones, tablets, and computers equipped with a φ3.5mm 4-pole mini jack. It also comes with a conversion cable with two φ3.5mm 3-pole mini plugs (one microphone, one headphone), allowing it to be used with older computers that do not have a 4-pole mini plug headset jack. Simply plug in the cable for easy connection, and you're ready to join a call immediately, without the hassle of setup or charging. This single-ear headset allows you to hear your surroundings. (Left ear only)